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POOLING AND SERVICING AGREEMENT

Pooling and Servicing Agreement

POOLING AND SERVICING AGREEMENT | Document Parties: WELLS FARGO MORTGAGE BACKED SECURITIES 2006-AR18 TRUST | HSBC BANK USA, NATIONAL ASSOCIATION You are currently viewing:
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WELLS FARGO MORTGAGE BACKED SECURITIES 2006-AR18 TRUST | HSBC BANK USA, NATIONAL ASSOCIATION

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Title: POOLING AND SERVICING AGREEMENT
Governing Law: New York     Date: 11/7/2006

POOLING AND SERVICING AGREEMENT, Parties: wells fargo mortgage backed securities 2006-ar18 trust , hsbc bank usa  national association
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          -------------------------------------------------------------------

                    WELLS FARGO ASSET SECURITIES CORPORATION

                                   (Depositor)

                                       and

                              WELLS FARGO BANK, N.A.

                                (Master Servicer)

                                       and

                       HSBC BANK USA, NATIONAL ASSOCIATION

                                    (Trustee)

                          POOLING AND SERVICING AGREEMENT

                          Dated as of October 24, 2006

                                $1,201,560,680.60

                       Mortgage Pass-Through Certificates
                                Series 2006-AR18

            -----------------------------------------------------------------


<PAGE>


                                TABLE OF CONTENTS

                                                                            Page

                                    ARTICLE I

                                   DEFINITIONS

Section 1.01      Definitions....................................................
Section 1.02      Acts of Holders................................................
Section 1.03      Effect of Headings and Table of Contents.......................
Section 1.04      Benefits of Agreement..........................................

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01      Conveyance of Mortgage Loans...................................
Section 2.02      Acceptance by Custodian........................................
Section 2.03      Representations and Warranties of the Master Servicer and the
                  Depositor.....................................................
Section 2.04      Execution and Delivery of Certificates.........................
Section 2.05      Designation of Certificates; Designation of Startup Day and
                   Latest Possible Maturity Date.................................

                                   ARTICLE III

                  ADMINISTRATION OF THE TRUST ESTATE; SERVICING
                              OF THE MORTGAGE LOANS

Section 3.01      Certificate Account............................................
Section 3.02      Permitted Withdrawals from the Certificate Account.............
Section 3.03      Advances by Master Servicer and Trustee........................
Section 3.04      Custodian to Cooperate; Release of Owner Mortgage Loan Files
                  and Retained Mortgage Loan Files..............................
Section 3.05      Annual Compliance Statements...................................
Section 3.06      Title, Management and Disposition of Any REO Mortgage Loan.....
Section 3.07      Amendments to Servicing Agreements,
                  Modification of Standard Provisions...........................
Section 3.08      Oversight of Servicing.........................................
Section 3.09      Termination and Substitution of Servicing Agreements...........
Section 3.10      Application of Net Liquidation Proceeds........................
Section 3.11      Assessment of Servicing Compliance; Registered Public
                  Accounting Firm Attestation Reports...........................
Section 3.12      Exchange Act Reports...........................................

                                   ARTICLE IV

                    DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                          PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

Section 4.01      Distributions..................................................
Section 4.02      Allocation of Realized Losses..................................
Section 4.03      Paying Agent...................................................
Section 4.04      Statements to Certificateholders; Reports to the Trustee and
                  the Depositor.................................................
Section 4.05      Reports to Mortgagors and the Internal Revenue Service.........
Section 4.06      Calculation of Amounts; Binding Effect of Interpretations and
                  Actions of Master Servicer....................................

                                     ARTICLE V

                                THE CERTIFICATES

Section 5.01      The Certificates...............................................
Section 5.02      Registration of Certificates...................................
Section 5.03      Mutilated, Destroyed, Lost or Stolen Certificates..............
Section 5.04      Persons Deemed Owners..........................................
Section 5.05      Access to List of Certificateholders' Names and Addresses......
Section 5.06      Maintenance of Office or Agency................................
Section 5.07      Definitive Certificates........................................
Section 5.08      Notices to Clearing Agency.....................................

                                   ARTICLE VI

                      THE DEPOSITOR AND THE MASTER SERVICER

Section 6.01      Liability of the Depositor and the Master Servicer.............
Section 6.02      Merger or Consolidation of the Depositor or the Master
                  Servicer......................................................
Section 6.03      Limitation on Liability of the Depositor, the Master Servicer
                  and Others....................................................
Section 6.04      Resignation of the Master Servicer.............................
Section 6.05      Compensation to the Master Servicer............................
Section 6.06      Assignment or Delegation of Duties by Master Servicer..........
Section 6.07      Indemnification of Trustee and Depositor by Master Servicer....
Section 6.08      Master Servicer Errors and Omissions Policy....................

                                   ARTICLE VII

                                     DEFAULT

Section 7.01      Events of Default..............................................
Section 7.02      Other Remedies of Trustee......................................
Section 7.03      Directions by Certificateholders and
                  Duties of Trustee During Event of Default.....................
Section 7.04      Action upon Certain Failures of the
                  Master Servicer and upon Event of Default.....................
Section 7.05      Trustee to Act; Appointment of Successor.......................
Section 7.06      Notification to Certificateholders.............................

                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

Section 8.01      Duties of Trustee..............................................
Section 8.02      Certain Matters Affecting the Trustee..........................
Section 8.03      Trustee Not Required to Make Investigation.....................
Section 8.04      Trustee Not Liable for Certificates or Mortgage Loans..........
Section 8.05      Trustee May Own Certificates...................................
Section 8.06      The Master Servicer to Pay Fees and Expenses; Limitation on
                  Liability.....................................................
Section 8.07      Eligibility Requirements.......................................
Section 8.08      Resignation and Removal........................................
Section 8.09      Successor......................................................
Section 8.10      Merger or Consolidation........................................
Section 8.11      Authenticating Agent...........................................
Section 8.12      Separate Trustees and Co-Trustees..............................
Section 8.13      Tax Matters; Compliance with REMIC Provisions..................
Section 8.14      Monthly Advances...............................................
Section 8.15      Indemnification of the Master Servicer and Depositor by the
                  Trustee.......................................................
Section 8.16      Trustee Errors and Omissions Policy............................

                                   ARTICLE IX

                                   TERMINATION

Section 9.01      Termination upon Purchase by the Depositor or
                  Liquidation of All Mortgage Loans in a Loan Group.............
Section 9.02      Additional Termination Requirements............................

                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

Section 10.01     Amendment......................................................
Section 10.02     Recordation of Agreement.......................................
Section 10.03     Limitation on Rights of Certificateholders.....................
Section 10.04     Governing Law; Jurisdiction....................................
Section 10.05     Notices........................................................
Section 10.06     Severability of Provisions.....................................
Section 10.07     Special Notices to Rating Agencies.............................
Section 10.08     Covenant of Depositor..........................................
Section 10.09     Recharacterization.............................................
Section 10.10     Regulation AB Compliance; Intent of Parties; Reasonableness....

                                    ARTICLE XI

                             TERMS FOR CERTIFICATES

Section 11.01     Cut-Off Date...................................................
Section 11.02     Cut-Off Date Aggregate Principal Balance.......................
Section 11.02(a) Cut-Off Date Group I Aggregate Principal Balance...............
Section 11.02(b) Cut-Off Date Group II Aggregate Principal Balance..............
Section 11.03     Original Group Percentage......................................
Section 11.04     Original Principal Balances of the Classes of Class A
                  Certificates..................................................
Section 11.05     Original Notional Amounts for Senior Interest Only
                  Certificates..................................................
Section 11.05(a) Original Class I-A-IO Notional Amount..........................
Section 11.05(b) Original Class II-A-IO Notional Amount.........................
Section 11.06     Original Subordinated Percentage...............................
Section 11.06(a) Original Group I Subordinated Percentage.......................
Section 11.06(b) Original Group II Subordinated Percentage......................
Section 11.07     Original Class B Principal Balance.............................
Section 11.07(a) Original Group I-B Principal Balance...........................
Section 11.07(b) Original Group II-B Principal Balance..........................
Section 11.08     Original Principal Balances of the Classes of Class B
                  Certificates..................................................
Section 11.09     Original Notional Amount for Subordinate Interest Only
                  Certificates..................................................
Section 11.10     Original Class I-B-1 Fractional Interest.......................
Section 11.11     Original Class I-B-2 Fractional Interest.......................
Section 11.12     Original Class I-B-3 Fractional Interest.......................
Section 11.13     Original Class I-B-4 Fractional Interest.......................
Section 11.14     Original Class I-B-5 Fractional Interest.......................
Section 11.15     Original Class II-B-1 Fractional Interest......................
Section 11.16     Original Class II-B-2 Fractional Interest......................
Section 11.17     Original Class II-B-3 Fractional Interest......................
Section 11.18     Original Class II-B-4 Fractional Interest......................
Section 11.19     Original Class II-B-5 Fractional Interest......................
Section 11.20     Closing Date...................................................
Section 11.21     Right to Purchase..............................................
Section 11.21(a) Right to Purchase Group I Mortgage Loans.......................
Section 11.21(b) Right to Purchase Group II Mortgage Loans......................
Section 11.22     Single Certificate.............................................
Section 11.23     Servicing Fee Rate.............................................
Section 11.24     Master Servicing Fee Rate......................................
SCHEDULE I - Applicable Unscheduled Principal Receipt Period


<PAGE>


                                    EXHIBITS

EXHIBIT A-I-A-1        -    Form of Face of Class I-A-1 Certificate
EXHIBIT A-I-A-2        -    Form of Face of Class I-A-2 Certificate
EXHIBIT A-I-A-IO       -    Form of Face of Class I-A-IO Certificate
EXHIBIT A-I-A-R        -    Form of Face of Class I-A-R Certificate
EXHIBIT A-II-A-1       -    Form of Face of Class II-A-1 Certificate
EXHIBIT A-II-A-2       -    Form of Face of Class II-A-2 Certificate
EXHIBIT A-II-A-IO      -    Form of Face of Class II-A-IO Certificate
EXHIBIT B-I-B-1        -    Form of Face of Class I-B-1 Certificate
EXHIBIT B-I-B-1-IO     -    Form of Face of Class I-B-1-IO Certificate
EXHIBIT B-I-B-2        -    Form of Face of Class I-B-2 Certificate
EXHIBIT B-I-B-2-IO     -    Form of Face of Class I-B-2-IO Certificate
EXHIBIT B-I-B-3        -    Form of Face of Class I-B-3 Certificate
EXHIBIT B-I-B-4        -    Form of Face of Class I-B-4 Certificate
EXHIBIT B-I-B-5        -    Form of Face of Class I-B-5 Certificate
EXHIBIT B-I-B-6        -    Form of Face of Class I-B-6 Certificate
EXHIBIT B-II-B-1       -    Form of Face of Class II-B-1 Certificate
EXHIBIT B-II-B-1-IO    -    Form of Face of Class II-B-1-IO Certificate
EXHIBIT B-II-B-2       -    Form of Face of Class II-B-2 Certificate
EXHIBIT B-II-B-2-IO    -    Form of Face of Class II-B-2-IO Certificate
EXHIBIT B-II-B-3       -    Form of Face of Class II-B-3 Certificate
EXHIBIT B-II-B-4       -    Form of Face of Class II-B-4 Certificate
EXHIBIT B-II-B-5       -    Form of Face of Class II-B-5 Certificate
EXHIBIT B-II-B-6       -    Form of Face of Class II-B-6 Certificate
EXHIBIT C              -    Form of Reverse of Series 2006-AR18 Certificates
EXHIBIT D              -    Reserved
EXHIBIT E              -    Custodial Agreement
EXHIBIT F              -    Addresses for Requesting Mortgage Loan Schedule
EXHIBIT G              -    Request for Release
EXHIBIT H              -    Affidavit Pursuant to Section 860E(e)(4) of the
                          Internal Revenue Code of 1986, as amended, and
                          for Non-ERISA Investors
EXHIBIT I              -    Letter from Transferor of Residual Certificate
EXHIBIT J              -    Transferee's Letter (Class [I-B-4] [I-B-5]
                          [I-B-6] [II-B-4] [II-B-5] [II-B-6] Certificates)
EXHIBIT K              -    List of Recordation States
EXHIBIT L              -    Servicing Agreements
EXHIBIT M              -    Form of Special Servicing Agreement
EXHIBIT N              -    Form of Initial Certification of the Custodian
EXHIBIT O              -    Form of Final Certification of the Custodian
EXHIBIT P              -    Form of Sarbanes Oxley Certification
EXHIBIT Q              -    Schedule of Pledged Asset Mortgage Loans
EXHIBIT R              -    Servicing Criteria to be Addressed in Assessment
                          of Compliance
EXHIBIT S              -    Additional Form 10-D Disclosure
EXHIBIT T              -    Additional Form 10-K Disclosure
EXHIBIT U              -    Form 8-K Disclosure Information
EXHIBIT V              -    Additional Disclosure Notification


<PAGE>


            This Pooling and Servicing Agreement, dated as of October 24, 2006
executed by WELLS FARGO ASSET SECURITIES CORPORATION, as Depositor, WELLS FARGO
BANK, N.A., as Master Servicer and HSBC BANK USA, NATIONAL ASSOCIATION, as
Trustee.

                          W I T N E S S E T H   T H A T:
                          - - - - - - - - - -   - - - -

            In consideration of the mutual agreements herein contained, the
Depositor, the Master Servicer and the Trustee agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

            Section 1.01 Definitions.

             Whenever used herein, the following words and phrases, unless the
context otherwise requires, shall have the meanings specified in this Article.

            1933 Act: The Securities Act of 1933, as amended.

            Accepted Master Servicing Practices: Accepted Master Servicing
Practices shall consist of the customary and usual master servicing practices of
prudent master servicing institutions which master service mortgage loans of the
same type as the Mortgage Loans in the jurisdictions in which the related
Mortgaged Properties are located, regardless of the date upon which the related
Mortgage Loans were originated.

            Additional Form 10-D Disclosure: As defined in Section 3.12(a).

            Additional Form 10-K Disclosure: As defined in Section 3.12(b).

            Additional Master Servicer: As defined in Section 6.06(b).

            Adjusted Principal Balance: As to any Distribution Date and any
Class of Class B Certificates of a Group (other than the Subordinate Interest
Only Certificates), the greater of (A) zero and (B) (i) the Principal Balance of
such Class with respect to such Distribution Date minus (ii) the applicable
Adjustment Amount for such Distribution Date less the Principal Balances for any
Classes of Class B Certificates of such Group with higher numerical
designations.

            Adjustment Amount: For a Group for any Distribution Date, the
difference between (A) the sum of the Group I-A Principal Balance or the Group
II-A Principal Balance, as applicable, and the Group I-B Principal Balance or
the Group II-B Principal Balance, as applicable, as of the related Determination
Date and (B) the sum of (i) the sum of the Group I-A Principal Balance or the
Group II-A Principal Balance, as applicable, and the Group I-B Principal Balance
or the Group II-B Principal Balance, as applicable, as of the Determination Date
succeeding such Distribution Date and (ii) the aggregate amount that would have
been distributed to all Classes of such Group as principal in accordance with
Section 4.01(a) for such Distribution Date without regard to the provisos in the
definitions of (x) Class I-B-1 Optimal Principal Amount, Class I-B-2 Optimal
Principal Amount, Class I-B-3 Optimal Principal Amount, Class I-B-4 Optimal
Principal Amount, Class I-B-5 Optimal Principal Amount and Class I-B-6 Optimal
Principal Amount or (y) Class II-B-1 Optimal Principal Amount, Class II-B-2
Optimal Principal Amount, Class II-B-3 Optimal Principal Amount, Class II-B-4
Optimal Principal Amount, Class II-B-5 Optimal Principal Amount and Class II-B-6
Optimal Principal Amount, as applicable.

            Adjustment Date: As to each Mortgage Loan, the Due Date on which
date an adjustment to the Mortgage Interest Rate of such Mortgage Loan becomes
effective under the related Mortgage Note, which Due Date is the date set forth
in the Mortgage Loan Schedule as the first Adjustment Date following the Closing
Date and each subsequent anniversary thereof.

            Aggregate Group I-A Unpaid Interest Shortfall: As to any
Distribution Date, an amount equal to the sum of the Class A Unpaid Interest
Shortfalls for the Group I-A Certificates.

            Aggregate Group II-A Unpaid Interest Shortfall: As to any
Distribution Date, an amount equal to the sum of the Class A Unpaid Interest
Shortfalls for the Group II-A Certificates.

            Aggregate Principal Balance: As of any Determination Date, the sum
of the Group I-A Principal Balance and the Group II-A Principal Balance and the
Class B Principal Balance as of such date.

            Agreement: This Pooling and Servicing Agreement and all amendments
and supplements hereto.

            Applicable Unscheduled Principal Receipt Period: With respect to the
Mortgage Loans serviced by each Servicer and each of the Full Unscheduled
Principal Receipts and Partial Unscheduled Principal Receipts, the Unscheduled
Principal Receipt Period specified on Schedule I hereto, as amended by the
Master Servicer pursuant to Section 10.01(b) hereof.

            Authenticating Agent: Any authenticating agent appointed by the
Trustee pursuant to Section 8.11. Initially, the Master Servicer shall be the
Authenticating Agent for the Certificates.

            Available Master Servicer Compensation: For each Loan Group as to
any Distribution Date, the sum of (a) the Master Servicing Fee with respect to
the Mortgage Loans in such Loan Group for such Distribution Date, (b) interest
earned through the business day preceding the applicable Distribution Date on
any Prepayments in Full on the Mortgage Loans in such Loan Group remitted to the
Master Servicer and (c) the aggregate amount of Month End Interest with respect
to the Mortgage Loans in such Loan Group remitted by the Servicers to the Master
Servicer pursuant to the related Servicing Agreements.

             Bankruptcy Code: The Bankruptcy Code of 1978, as amended.

            Bankruptcy Loss: With respect to any Mortgage Loan, a Deficient
Valuation or Debt Service Reduction; provided, however, that a Bankruptcy Loss
shall not be deemed a Bankruptcy Loss hereunder so long as the applicable
Servicer has notified the Master Servicer and the Trustee in writing that such
Servicer is diligently pursuing any remedies that may exist in connection with
the representations and warranties made regarding the related Mortgage Loan and
either (A) the related Mortgage Loan is not in default with regard to payments
due thereunder or (B) delinquent payments of principal and interest under the
related Mortgage Loan and any premiums on any applicable primary hazard
insurance policy and any related escrow payments in respect of such Mortgage
Loan are being advanced on a current basis by such Servicer without giving
effect to any Debt Service Reduction.

            Beneficial Owner: With respect to a Book-Entry Certificate, the
Person who is the beneficial owner of such Book-Entry Certificate, as reflected
on the books of the Clearing Agency, or on the books of a Person maintaining an
account with such Clearing Agency (directly or as an indirect participant, in
accordance with the rules of such Clearing Agency), as the case may be.

            Book-Entry Certificate: Any one of the Class I-A-1 Certificates,
Class I-A-2 Certificates, Class I-A-IO Certificates, Class II-A-1 Certificates,
Class II-A-2 Certificates, Class II-A-IO Certificates, Class I-B-1 Certificates,
Class I-B-1-IO Certificates, Class I-B-2 Certificates, Class I-B-2-IO
Certificates, Class I-B-3 Certificates, Class II-B-1 Certificates, Class
II-B-1-IO Certificates, Class II-B-2 Certificates, Class II-B-2-IO Certificates
and Class II-B-3 Certificates, beneficial ownership and transfers of which shall
be evidenced by, and made through, book entries by the Clearing Agency as
described in Section 5.01(b).

            Business Day: Any day other than (i) a Saturday or a Sunday, or (ii)
a legal holiday in the City of New York, State of Iowa, State of Maryland or
State of Minnesota or (iii) a day on which banking institutions in the City of
New York, or the State of Iowa, State of Maryland or State of Minnesota are
authorized or obligated by law or executive order to be closed.

            Certificate: Any one of the Class A Certificates or Class B
Certificates.

            Certificate Account: The separate trust account established and
maintained by the Master Servicer in the name of the Master Servicer on behalf
of the Trustee pursuant to Section 3.01. The Certificate Account shall be an
Eligible Account.

            Certificate Custodian: Initially, Wells Fargo Bank; thereafter any
other Certificate Custodian acceptable to The Depository Trust Company and
selected by the Trustee.

            Certificate Register and Certificate Registrar: Respectively, the
register maintained pursuant to and the registrar provided for in Section 5.02.
Initially, the Certificate Registrar shall be the Master Servicer.

            Certificateholder or Holder: The Person in whose name a Certificate
is registered in the Certificate Register, except that, solely for the purposes
of the taking of any action under Articles VII or VIII, any Certificate
registered in the name of the Master Servicer, a Servicer or any affiliate
thereof shall be deemed not to be outstanding and the Voting Interest evidenced
thereby shall not be taken into account in determining whether the requisite
percentage of Certificates necessary to effect any such action has been
obtained.

            Class: All certificates whose form is identical except for
variations in the Percentage Interest evidenced thereby.

            Class I-A-1 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit A-I-A-1 and Exhibit C hereto.

            Class I-A-1 Certificateholder: The registered holder of a Class
I-A-1 Certificate.

            Class I-A-1 Loss Amount: With respect to any Determination Date
after the Subordination Depletion Date for Group I, the amount, if any, by which
the Principal Balance of the Class I-A-1 Certificates would be reduced as a
result of the application of the third sentence of the definition of Principal
Balance.

            Class I-A-1 Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2016, the Class I-A-1
Pass-Through Rate will be the per annum rate equal to the Net WAC of the Group I
Mortgage Loans minus 0.223799%. On and after the Distribution Date in October
2016, the Class I-A-1 Pass-Through Rate will be a per annum rate equal to the
Net WAC of the Group I Mortgage Loans.

             Class I-A-2 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit A-I-A-2 and Exhibit C hereto.

            Class I-A-2 Certificateholder: The registered holder of a Class
I-A-2 Certificate.

            Class I-A-2 Loss Allocation Amount: With respect to any
Determination Date after the Subordination Depletion Date for Group I, the
lesser of (a) the Principal Balance of the Class I-A-2 Certificates with respect
to such Determination Date prior to any reduction for the Class I-A-2 Loss
Allocation Amount and (b) the Class I-A-1 Loss Amount.

            Class I-A-2 Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2016, the Class I-A-2
Pass-Through Rate will be the per annum rate equal to the Net WAC of the Group I
Mortgage Loans minus 0.223799%. On and after the Distribution Date in October
2016, the Class I-A-2 Pass-Through Rate will be a per annum rate equal to the
Net WAC of the Group I Mortgage Loans.

            Class I-A-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit A-I-A-IO and Exhibit C hereto.

            Class I-A-IO Certificateholder: The registered holder of a Class
I-A-IO Certificate.

            Class I-A-IO Notional Amount: As to the first Distribution Date, the
Original Class I-A-IO Notional Amount and, with respect to each Distribution
Date prior to the Distribution Date in October 2016, an amount equal to the sum
of the Principal Balances of the Class I-A-1 and Class I-A-2 Certificates. On
and after the Distribution Date in October 2016, the Class I-A-IO Notional
Amount will be zero.

            Class I-A-IO Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2016, the Class I-A-IO
Pass-Through Rate will be the per annum rate equal to 0.223799%. On and after
the Distribution Date in October 2016, the Class I-A-IO Pass-Through Rate will
be zero.

            Class I-A-LR Interest: The residual interest in the Lower-Tier
REMIC, beneficial ownership of which is represented by the Class I-A-R
Certificate.

            Class I-A-R Certificate: The Certificate executed by the Paying
Agent and countersigned by the Authenticating Agent in substantially the form
set forth in Exhibit A-I-A-R and Exhibit C hereto.

            Class I-A-R Certificateholder: The registered holder of the Class
I-A-R Certificate.

            Class I-A-R Interest: The residual interest in the Upper-Tier REMIC,
beneficial ownership of which is evidenced by the Class I-A-R Certificate.

            Class I-A-M1 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-A-MR Interest: The residual interest in the Middle-Tier
REMIC, beneficial ownership of which is represented by the Class I-A-R
Certificate.

            Class I-A-MUR Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-1 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-1 and Exhibit C hereto.

             Class I-B-1 Certificateholder: The registered holder of a Class
I-B-1 Certificate.

            Class I-B-1 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-1 Certificates pursuant to
Paragraphs first, second and third of Section 4.01(a)(ii).

            Class I-B-1 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-1 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-1 Certificates on such Distribution Date pursuant to Paragraph
first of Section 4.01(a)(ii).

            Class I-B-1 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-1 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-1 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-1 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-1 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-1 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-1 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-1 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-1 Certificates.

            Class I-B-1 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-1 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-1 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-1 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-1
Certificates are the only Group I-B Certificates eligible to receive such
unscheduled principal distributions in accordance with Section 4.01(d)(i), the
Class I-B-1 Prepayment Percentage for such unscheduled principal distributions
for such Distribution Date will be one.

            Class I-B-1 Principal Balance: As to the first Determination Date,
the Original Class I-B-1 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-1 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-1 Certificates on prior
Distribution Dates (A) pursuant to Paragraph third of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class I-B-1
Certificates are the most subordinate Group I-B Certificates outstanding, the
Class I-B-1 Principal Balance will equal the difference, if any, between the
Group I Adjusted Pool Amount as of the preceding Distribution Date less the
Group I-A Principal Balance as of such Determination Date.

            Class I-B-1 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-1 Certificates
pursuant to Paragraph third of Section 4.01(a)(ii).

            Class I-B-1 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-1 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-1 Certificates on prior Distribution Dates pursuant to
Paragraph second of Section 4.01(a)(ii).

            Class I-B-1-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-I-B-1-IO and Exhibit C hereto.

            Class I-B-1-IO Certificateholder: The registered holder of a Class
I-B-1-IO Certificate.

            Class I-B-1-IO Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-1-IO Certificates pursuant
to Paragraphs first and second of Section 4.01(a)(ii).

            Class I-B-1-IO Interest Shortfall Amount: As to any Distribution
Date, any amount by which the Interest Accrual Amount of the Class I-B-1-IO
Certificates with respect to such Distribution Date exceeds the amount
distributed in respect of the Class I-B-1-IO Certificates on such Distribution
Date pursuant to Paragraph first of Section 4.01(a)(ii).

            Class I-B-1-IO Notional Amount: As to the first Distribution Date,
the Original Class I-B-1-IO Notional Amount and, with respect to any subsequent
Distribution Date, an amount equal to the Principal Balance of the Class I-B-1
Certificates.

            Class I-B-1-IO Pass-Through Rate: With respect to each Distribution
Date, the Class I-B-1-IO Pass-Through Rate will be the per annum rate equal to
0.223799%.

            Class I-B-1-IO Unpaid Interest Shortfall: As to any Distribution
Date, the amount, if any, by which the aggregate of the Class I-B-1-IO Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class I-B-1-IO Certificates on prior Distribution
Dates pursuant to Paragraph second of Section 4.01(a)(ii).

            Class I-B-2 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-2 and Exhibit C hereto.

            Class I-B-2 Certificateholder: The registered holder of a Class
I-B-2 Certificate.

            Class I-B-2 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-2 Certificates pursuant to
Paragraphs fourth, fifth and sixth of Section 4.01(a)(ii).

            Class I-B-2 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-2 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-2 Certificates on such Distribution Date pursuant to Paragraph
fourth of Section 4.01(a)(ii).

            Class I-B-2 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-2 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-2 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-2 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-2 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-2 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-2 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-2 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-2 Certificates.

            Class I-B-2 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-2 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-2 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-2 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-2
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class I-B-2 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class I-B-2 Principal Balance: As to the first Determination Date,
the Original Class I-B-2 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-2 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-2 Certificates on prior
Distribution Dates (A) pursuant to Paragraph sixth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class I-B-2
Certificates are the most subordinate Group I-B Certificates outstanding, the
Class I-B-2 Principal Balance will equal the difference, if any, between the
Group I Adjusted Pool Amount as of the preceding Distribution Date less the sum
of the Group I-A Principal Balance and the Class I-B-1 Principal Balance as of
such Determination Date.

            Class I-B-2 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-2 Certificates
pursuant to Paragraph sixth of Section 4.01(a)(ii).

            Class I-B-2 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-2 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-2 Certificates on prior Distribution Dates pursuant to
Paragraph fifth of Section 4.01(a)(ii).

            Class I-B-2-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-I-B-2-IO and Exhibit C hereto.

            Class I-B-2-IO Certificateholder: The registered holder of a Class
I-B-2-IO Certificate.

            Class I-B-2-IO Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-2-IO Certificates pursuant
to Paragraphs fourth and fifth of Section 4.01(a)(ii).

            Class I-B-2-IO Interest Shortfall Amount: As to any Distribution
Date, any amount by which the Interest Accrual Amount of the Class I-B-2-IO
Certificates with respect to such Distribution Date exceeds the amount
distributed in respect of the Class I-B-2-IO Certificates on such Distribution
Date pursuant to Paragraph fourth of Section 4.01(a)(ii).

            Class I-B-2-IO Notional Amount: As to the first Distribution Date,
the Original Class I-B-2-IO Notional Amount and, with respect to any subsequent
Distribution Date, an amount equal to the Principal Balance of the Class I-B-2
Certificates.

            Class I-B-2-IO Pass-Through Rate: With respect to each Distribution
Date, the Class I-B-2-IO Pass-Through Rate will be the per annum rate equal to
0.223799%.

            Class I-B-2-IO Unpaid Interest Shortfall: As to any Distribution
Date, the amount, if any, by which the aggregate of the Class I-B-2-IO Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class I-B-2-IO Certificates on prior Distribution
Dates pursuant to Paragraph fifth of Section 4.01(a)(ii).

            Class I-B-3 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-3 and Exhibit C hereto.

            Class I-B-3 Certificateholder: The registered holder of a Class
I-B-3 Certificate.

            Class I-B-3 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-3 Certificates pursuant to
Paragraphs seventh, eighth and ninth of Section 4.01(a)(ii).

            Class I-B-3 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-3 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-3 Certificates on such Distribution Date pursuant to Paragraph
seventh of Section 4.01(a)(ii).

            Class I-B-3 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-3 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-3 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-3 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-3 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-3 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-3 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-3 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-3 Certificates.

            Class I-B-3 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-3 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-3 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-3 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-3
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class I-B-3 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class I-B-3 Principal Balance: As to the first Determination Date,
the Original Class I-B-3 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-3 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-3 Certificates on prior
Distribution Dates (A) pursuant to Paragraph ninth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class I-B-3
Certificates are the most subordinate Group I-B Certificates outstanding, the
Class I-B-3 Principal Balance will equal the difference, if any, between the
Group I Adjusted Pool Amount as of the preceding Distribution Date less the sum
of the Group I-A Principal Balance, the Class I-B-1 Principal Balance and the
Class I-B-2 Principal Balance as of such Determination Date.

            Class I-B-3 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-3 Certificates
pursuant to Paragraph ninth of Section 4.01(a)(ii).

             Class I-B-3 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-3 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-3 Certificates on prior Distribution Dates pursuant to
Paragraph eighth of Section 4.01(a)(ii).

            Class I-B-4 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-4 and Exhibit C hereto. Class I-B-4
Certificateholder: The registered holder of a Class I-B-4 Certificate.

            Class I-B-4 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-4 Certificates pursuant to
Paragraphs tenth, eleventh and twelfth of Section 4.01(a)(ii).

            Class I-B-4 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-4 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-4 Certificates on such Distribution Date pursuant to Paragraph
tenth of Section 4.01(a)(ii).

            Class I-B-4 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-4 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-4 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-4 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-4 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-4 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-4 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-4 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-4 Certificates.

            Class I-B-4 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-4 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-4 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-4 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-4
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class I-B-4 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class I-B-4 Principal Balance: As to the first Determination Date,
the Original Class I-B-4 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-4 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-4 Certificates on prior
Distribution Dates (A) pursuant to Paragraph twelfth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class I-B-4
Certificates are the most subordinate Group I-B Certificates outstanding, the
Class I-B-4 Principal Balance will equal the difference, if any, between the
Group I Adjusted Pool Amount as of the preceding Distribution Date less the sum
of the Group I-A Principal Balance, the Class I-B-1 Principal Balance, the Class
I-B-2 Principal Balance and the Class I-B-3 Principal Balance as of such
Determination Date.

            Class I-B-4 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-4 Certificates
pursuant to Paragraph twelfth of Section 4.01(a)(ii).

            Class I-B-4 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-4 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-4 Certificates on prior Distribution Dates pursuant to
Paragraph eleventh of Section 4.01(a)(ii).

            Class I-B-5 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-5 and Exhibit C hereto.

            Class I-B-5 Certificateholder: The registered holder of a Class
I-B-5 Certificate.

            Class I-B-5 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-5 Certificates pursuant to
Paragraphs thirteenth, fourteenth and fifteenth of Section 4.01(a)(ii).

            Class I-B-5 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-5 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-5 Certificates on such Distribution Date pursuant to Paragraph
thirteenth of Section 4.01(a)(ii).

            Class I-B-5 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-5 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-5 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-5 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-5 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-5 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-5 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-5 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-5 Certificates.

            Class I-B-5 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-5 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-5 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-5 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-5
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class I-B-5 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class I-B-5 Principal Balance: As to the first Determination Date,
the Original Class I-B-5 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-5 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-5 Certificates on prior
Distribution Dates (A) pursuant to Paragraph fifteenth of Section 4.01(a)(ii)
and (B) as a result of a Principal Adjustment; provided, however, if the Class
I-B-5 Certificates are the most subordinate Group I-B Certificates outstanding,
the Class I-B-5 Principal Balance will equal the difference, if any, between the
Group I Adjusted Pool Amount as of the preceding Distribution Date less the sum
of the Group I-A Principal Balance, the Class I-B-1 Principal Balance, the Class
I-B-2 Principal Balance, the Class I-B-3 Principal Balance and the Class I-B-4
Principal Balance as of such Determination Date.

            Class I-B-5 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-5 Certificates
pursuant to Paragraph fifteenth of Section 4.01(a)(ii).

            Class I-B-5 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-5 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-5 Certificates on prior Distribution Dates pursuant to
Paragraph fourteenth of Section 4.01(a)(ii).

            Class I-B-6 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-I-B-6 and Exhibit C hereto.

            Class I-B-6 Certificateholder: The registered holder of a Class
I-B-6 Certificate.

            Class I-B-6 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class I-B-6 Certificates pursuant to
Paragraphs sixteenth, seventeenth and eighteenth of Section 4.01(a)(ii).

            Class I-B-6 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class I-B-6 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class I-B-6 Certificates on such Distribution Date pursuant to Paragraph
sixteenth of Section 4.01(a)(ii).

            Class I-B-6 Optimal Principal Amount: As to any Distribution Date
and each Group I Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class I-B-6 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class I-B-6 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
       Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class I-B-6 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class I-B-6 Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class I-B-6 Prepayment Percentage of the Recovery for Loan Group I for
such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class I-B-6 Optimal Principal Amount
will equal the lesser of (A) the Class I-B-6 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class I-B-6 Certificates.

            Class I-B-6 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group I Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class I-B-6 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group I-B Principal Balance.

            Class I-B-6 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group I Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class I-B-6 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group I-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group I-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class I-B-6
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class I-B-6 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class I-B-6 Principal Balance: As to the first Determination Date,
the Original Class I-B-6 Principal Balance. As of any subsequent Determination
Date, the Original Class I-B-6 Principal Balance less the sum of all amounts
previously distributed in respect of the Class I-B-6 Certificates on prior
Distribution Dates pursuant to Paragraph eighteenth of Section 4.01(a)(ii);
provided, however, if the Class I-B-6 Certificates are outstanding, the Class
I-B-6 Principal Balance will equal the difference, if any, between the Group I
Adjusted Pool Amount as of the preceding Distribution Date less the sum of the
Group I-A Principal Balance, the Class I-B-1 Principal Balance, the Class I-B-2
Principal Balance, the Class I-B-3 Principal Balance, the Class I-B-4 Principal
Balance and the Class I-B-5 Principal Balance as of such Determination Date.

            Class I-B-6 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class I-B-6 Certificates
pursuant to Paragraph eighteenth of Section 4.01(a)(ii).

            Class I-B-6 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class I-B-6 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class I-B-6 Certificates on prior Distribution Dates pursuant to
Paragraph seventeenth of Section 4.01(a)(ii).

            Class I-B-M1 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-M2 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-M3 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-M4 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-M5 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-B-M6 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class I-L Interest: A regular interest in the Lower-Tier REMIC which
is held as an asset of the Middle-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(v) hereof.

            Class II-A-1 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit A-II-A-1 and Exhibit C hereto.

            Class II-A-1 Certificateholder: The registered holder of a Class
II-A-1 Certificate.

            Class II-A-1 Loss Amount: With respect to any Determination Date
after the Subordination Depletion Date for Group II, the amount, if any, by
which the Principal Balance of the Class II-A-1 Certificates would be reduced as
a result of the application of the third sentence of the definition of Principal
Balance.

            Class II-A-1 Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2013, the Class II-A-1
Pass-Through Rate will be the per annum rate equal to the Net WAC of the Group
II Mortgage Loans minus 0.498602%. On and after the Distribution Date in October
2013, the Class II-A-1 Pass-Through Rate will be a per annum rate equal to the
Net WAC of the Group II Mortgage Loans.

            Class II-A-2 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit A-II-A-2 and Exhibit C hereto.

            Class II-A-2 Certificateholder: The registered holder of a Class
II-A-2 Certificate.

            Class II-A-2 Loss Allocation Amount: With respect to any
Determination Date after the Subordination Depletion Date for Group II, the
lesser of (a) the Principal Balance of the Class II-A-2 Certificates with
respect to such Determination Date prior to any reduction for the Class II-A-2
Loss Allocation Amount and (b) the Class II-A-1 Loss Amount.

            Class II-A-2 Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2013, the Class II-A-2
Pass-Through Rate will be the per annum rate equal to the Net WAC of the Group
II Mortgage Loans minus 0.498602%. On and after the Distribution Date in October
2013, the Class II-A-2 Pass-Through Rate will be a per annum rate equal to the
Net WAC of the Group II Mortgage Loans.

            Class II-A-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit A-II-A-IO and Exhibit C hereto.

            Class II-A-IO Certificateholder: The registered holder of a Class
II-A-IO Certificate.

            Class II-A-IO Notional Amount: As to the first Distribution Date,
the Original Class II-A-IO Notional Amount and, with respect to each
Distribution Date prior to the Distribution Date in October 2013, an amount
equal to the sum of the Principal Balances of the Class II-A-1 and Class II-A-2
Certificates. On and after the Distribution Date in October 2013, the Class
II-A-IO Notional Amount will be zero.

            Class II-A-IO Pass-Through Rate: With respect to each Distribution
Date occurring prior to the Distribution Date in October 2013, the Class II-A-IO
Pass-Through Rate will be the per annum rate equal to 0.498602%. On and after
the Distribution Date in October 2013, the Class II-A-IO Pass-Through Rate will
be zero.

             Class II-A-M1 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-B-1 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-1 and Exhibit C hereto.

            Class II-B-1 Certificateholder: The registered holder of a Class
II-B-1 Certificate.

            Class II-B-1 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-1 Certificates pursuant to
Paragraphs first, second and third of Section 4.01(a)(ii).

            Class II-B-1 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-1 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-1 Certificates on such Distribution Date pursuant to Paragraph
first of Section 4.01(a)(ii).

            Class II-B-1 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-1 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class II-B-1 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
       for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-1 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-1 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-1 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-1 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-1 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-1 Certificates.

            Class II-B-1 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-1 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-1 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-1 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-1
Certificates are the only Group II-B Certificates eligible to receive such
unscheduled principal distributions in accordance with Section 4.01(d)(i), the
Class II-B-1 Prepayment Percentage for such unscheduled principal distributions
for such Distribution Date will be one.

            Class II-B-1 Principal Balance: As to the first Determination Date,
the Original Class II-B-1 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-1 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-1 Certificates on prior
Distribution Dates (A) pursuant to Paragraph third of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class
II-B-1 Certificates are the most subordinate Group II-B Certificates
outstanding, the Class II-B-1 Principal Balance will equal the difference, if
any, between the Group II Adjusted Pool Amount as of the preceding Distribution
Date less the Group II-A Principal Balance as of such Determination Date.

            Class II-B-1 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-1 Certificates
pursuant to Paragraph third of Section 4.01(a)(ii).

            Class II-B-1 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-1 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-1 Certificates on prior Distribution
Dates pursuant to Paragraph second of Section 4.01(a)(ii).

            Class II-B-1-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-1-IO and Exhibit C hereto.

            Class II-B-1-IO Certificateholder: The registered holder of a Class
II-B-1-IO Certificate.

            Class II-B-1-IO Distribution Amount: As to any Distribution Date,
any amount distributable to the Holders of the Class II-B-1-IO Certificates
pursuant to Paragraphs first and second of Section 4.01(a)(ii).

            Class II-B-1-IO Interest Shortfall Amount: As to any Distribution
Date, any amount by which the Interest Accrual Amount of the Class II-B-1-IO
Certificates with respect to such Distribution Date exceeds the amount
distributed in respect of the Class II-B-1-IO Certificates on such Distribution
Date pursuant to Paragraph first of Section 4.01(a)(ii).

            Class II-B-1-IO Notional Amount: As to the first Distribution Date,
the Original Class II-B-1-IO Notional Amount and, with respect to any subsequent
Distribution Date, an amount equal to the Principal Balance of the Class II-B-1
Certificates.

            Class II-B-1-IO Pass-Through Rate: With respect to each Distribution
Date, the Class II-B-1-IO Pass-Through Rate will be the per annum rate equal to
0.248602%.

            Class II-B-1-IO Unpaid Interest Shortfall: As to any Distribution
Date, the amount, if any, by which the aggregate of the Class II-B-1-IO Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-1-IO Certificates on prior Distribution
Dates pursuant to Paragraph second of Section 4.01(a)(ii).

            Class II-B-2 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-2 and Exhibit C hereto.

            Class II-B-2 Certificateholder: The registered holder of a Class
II-B-2 Certificate.

            Class II-B-2 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-2 Certificates pursuant to
Paragraphs fourth, fifth and sixth of Section 4.01(a)(ii).

            Class II-B-2 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-2 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-2 Certificates on such Distribution Date pursuant to Paragraph
fourth of Section 4.01(a)(ii).

            Class II-B-2 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-2 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class II-B-2 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-2 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-2 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-2 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-2 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-2 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-2 Certificates.

            Class II-B-2 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-2 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-2 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-2 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-2
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class II-B-2 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class II-B-2 Principal Balance: As to the first Determination Date,
the Original Class II-B-2 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-2 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-2 Certificates on prior
Distribution Dates (A) pursuant to Paragraph sixth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class
II-B-2 Certificates are the most subordinate Group II-B Certificates
outstanding, the Class II-B-2 Principal Balance will equal the difference, if
any, between the Group II Adjusted Pool Amount as of the preceding Distribution
Date less the sum of the Group II-A Principal Balance and the Class II-B-1
Principal Balance as of such Determination Date.

            Class II-B-2 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-2 Certificates
pursuant to Paragraph sixth of Section 4.01(a)(ii).

            Class II-B-2 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-2 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-2 Certificates on prior Distribution
Dates pursuant to Paragraph fifth of Section 4.01(a)(ii).

            Class II-B-2-IO Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-2-IO and Exhibit C hereto.

            Class II-B-2-IO Certificateholder: The registered holder of a Class
II-B-2-IO Certificate.

            Class II-B-2-IO Distribution Amount: As to any Distribution Date,
any amount distributable to the Holders of the Class II-B-2-IO Certificates
pursuant to Paragraphs fourth and fifth of Section 4.01(a)(ii).

            Class II-B-2-IO Interest Shortfall Amount: As to any Distribution
Date, any amount by which the Interest Accrual Amount of the Class II-B-2-IO
Certificates with respect to such Distribution Date exceeds the amount
distributed in respect of the Class II-B-2-IO Certificates on such Distribution
Date pursuant to Paragraph fourth of Section 4.01(a)(ii).

            Class II-B-2-IO Notional Amount: As to the first Distribution Date,
the Original Class II-B-2-IO Notional Amount and, with respect to any subsequent
Distribution Date, an amount equal to the Principal Balance of the Class II-B-2
Certificates.

            Class II-B-2-IO Pass-Through Rate: With respect to each Distribution
Date, the Class II-B-2-IO Pass-Through Rate will be the per annum rate equal to
0.248602%.

             Class II-B-2-IO Unpaid Interest Shortfall: As to any Distribution
Date, the amount, if any, by which the aggregate of the Class II-B-2-IO Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-2-IO Certificates on prior Distribution
Dates pursuant to Paragraph fifth of Section 4.01(a)(ii).

            Class II-B-3 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-3 and Exhibit C hereto.

            Class II-B-3 Certificateholder: The registered holder of a Class
II-B-3 Certificate.

            Class II-B-3 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-3 Certificates pursuant to
Paragraphs seventh, eighth and ninth of Section 4.01(a)(ii).

            Class II-B-3 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-3 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-3 Certificates on such Distribution Date pursuant to Paragraph
seventh of Section 4.01(a)(ii).

            Class II-B-3 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-3 Percentage of the principal portion of the
Monthly Payment due on the Due Date occurring in the month of such Distribution
Date on such Mortgage Loan;

            (ii) the Class II-B-3 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
       Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-3 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-3 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-3 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-3 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-3 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-3 Certificates.

            Class II-B-3 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-3 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-3 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-3 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-3
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class II-B-3 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class II-B-3 Principal Balance: As to the first Determination Date,
the Original Class II-B-3 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-3 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-3 Certificates on prior
Distribution Dates (A) pursuant to Paragraph ninth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class
II-B-3 Certificates are the most subordinate Group II-B Certificates
outstanding, the Class II-B-3 Principal Balance will equal the difference, if
any, between the Group II Adjusted Pool Amount as of the preceding Distribution
Date less the sum of the Group II-A Principal Balance, the Class II-B-1
Principal Balance and the Class II-B-2 Principal Balance as of such
Determination Date.

            Class II-B-3 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-3 Certificates
pursuant to Paragraph ninth of Section 4.01(a)(ii).

            Class II-B-3 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-3 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-3 Certificates on prior Distribution
Dates pursuant to Paragraph eighth of Section 4.01(a)(ii).

            Class II-B-4 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-4 and Exhibit C hereto.

            Class II-B-4 Certificateholder: The registered holder of a Class
II-B-4 Certificate.

            Class II-B-4 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-4 Certificates pursuant to
Paragraphs tenth, eleventh and twelfth of Section 4.01(a)(ii).

            Class II-B-4 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-4 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-4 Certificates on such Distribution Date pursuant to Paragraph
tenth of Section 4.01(a)(ii).

            Class II-B-4 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-4 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class II-B-4 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-4 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-4 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-4 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-4 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-4 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-4 Certificates.

            Class II-B-4 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-4 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-4 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-4 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-4
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class II-B-4 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class II-B-4 Principal Balance: As to the first Determination Date,
the Original Class II-B-4 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-4 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-4 Certificates on prior
Distribution Dates (A) pursuant to Paragraph twelfth of Section 4.01(a)(ii) and
(B) as a result of a Principal Adjustment; provided, however, if the Class
II-B-4 Certificates are the most subordinate Group II-B Certificates
outstanding, the Class II-B-4 Principal Balance will equal the difference, if
any, between the Group II Adjusted Pool Amount as of the preceding Distribution
Date less the sum of the Group II-A Principal Balance, the Class II-B-1
Principal Balance, the Class II-B-2 Principal Balance and the Class II-B-3
Principal Balance as of such Determination Date.

            Class II-B-4 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-4 Certificates
pursuant to Paragraph twelfth of Section 4.01(a)(ii).

            Class II-B-4 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-4 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-4 Certificates on prior Distribution
Dates pursuant to Paragraph eleventh of Section 4.01(a)(ii).

            Class II-B-5 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-5 and Exhibit C hereto.

            Class II-B-5 Certificateholder: The registered holder of a Class
II-B-5 Certificate.

            Class II-B-5 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-5 Certificates pursuant to
Paragraphs thirteenth, fourteenth and fifteenth of Section 4.01(a)(ii).

            Class II-B-5 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-5 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-5 Certificates on such Distribution Date pursuant to Paragraph
thirteenth of Section 4.01(a)(ii).

            Class II-B-5 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-5 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class II-B-5 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-5 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-5 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-5 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-5 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-5 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-5 Certificates.

             Class II-B-5 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-5 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-5 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-5 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-5
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class II-B-5 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class II-B-5 Principal Balance: As to the first Determination Date,
the Original Class II-B-5 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-5 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-5 Certificates on prior
Distribution Dates (A) pursuant to Paragraph fifteenth of Section 4.01(a)(ii)
and (B) as a result of a Principal Adjustment; provided, however, if the Class
II-B-5 Certificates are the most subordinate Group II-B Certificates
outstanding, the Class II-B-5 Principal Balance will equal the difference, if
any, between the Group II Adjusted Pool Amount as of the preceding Distribution
Date less the sum of the Group II-A Principal Balance, the Class II-B-1
Principal Balance, the Class II-B-2 Principal Balance, the Class II-B-3
Principal Balance and the Class II-B-4 Principal Balance as of such
Determination Date.

            Class II-B-5 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-5 Certificates
pursuant to Paragraph fifteenth of Section 4.01(a)(ii).

            Class II-B-5 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-5 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-5 Certificates on prior Distribution
Dates pursuant to Paragraph fourteenth of Section 4.01(a)(ii).

            Class II-B-6 Certificate: Any one of the Certificates executed by
the Paying Agent and countersigned by the Authenticating Agent in substantially
the form set forth in Exhibit B-II-B-6 and Exhibit C hereto.

            Class II-B-6 Certificateholder: The registered holder of a Class
II-B-6 Certificate.

            Class II-B-6 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class II-B-6 Certificates pursuant to
Paragraphs sixteenth, seventeenth and eighteenth of Section 4.01(a)(ii).

             Class II-B-6 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class II-B-6 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class II-B-6 Certificates on such Distribution Date pursuant to Paragraph
sixteenth of Section 4.01(a)(ii).

            Class II-B-6 Optimal Principal Amount: As to any Distribution Date
and each Group II Mortgage Loan that is an Outstanding Mortgage Loan, an amount
equal to the sum of (I) the sum of:

            (i) the Class II-B-6 Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Class II-B-6 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class II-B-6 Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Class II-B-6 Percentage of the Substitution Principal
      Amount with respect to each Group II Mortgage Loan for which a Mortgage
      Loan was substituted during the one month period ending on the day
      preceding the Determination Date for such Distribution Date, less the
      amount allocable to the principal portion of any unreimbursed Periodic
      Advances previously made by the applicable Servicer, the Master Servicer
      or the Trustee in respect of such Mortgage Loan for which a Mortgage Loan
      was substituted; and

(II) the Class II-B-6 Prepayment Percentage of the Recovery for Loan Group II
for such Distribution Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class II-B-6 Optimal Principal Amount
will equal the lesser of (A) the Class II-B-6 Optimal Principal Amount
calculated as described in the preceding provisions and (B) the Adjusted
Principal Balance for the Class II-B-6 Certificates.

            Class II-B-6 Percentage: As to any Distribution Date, the percentage
calculated by multiplying (i) the Group II Subordinated Percentage by (ii) a
fraction, the numerator of which is the Class II-B-6 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is the Group II-B Principal Balance.

            Class II-B-6 Prepayment Percentage: As to any Distribution Date,
except as set forth in the next sentence, the percentage calculated by
multiplying (i) the Group II Subordinated Prepayment Percentage by (ii) a
fraction, the numerator of which is the Class II-B-6 Principal Balance
(determined as of the Determination Date preceding such Distribution Date) and
the denominator of which is (a) for the purpose of allocating Liquidation
Proceeds (other than Partial Liquidation Proceeds), the Group II-B Principal
Balance and (b) for the purpose of allocating all other unscheduled principal
distributions, the Principal Balances of the Classes of Group II-B Certificates
eligible to receive such unscheduled principal distributions for such
Distribution Date in accordance with the provisions of Section 4.01(d). Except
as set forth in Section 4.01(d)(ii), in the event that the Class II-B-6
Certificates are not eligible to receive such unscheduled principal
distributions in accordance with Section 4.01(d)(i), the Class II-B-6 Prepayment
Percentage for such unscheduled principal distributions for such Distribution
Date will be zero.

            Class II-B-6 Principal Balance: As to the first Determination Date,
the Original Class II-B-6 Principal Balance. As of any subsequent Determination
Date, the Original Class II-B-6 Principal Balance less the sum of all amounts
previously distributed in respect of the Class II-B-6 Certificates on prior
Distribution Dates pursuant to Paragraph eighteenth of Section 4.01(a)(ii);
provided, however, if the Class II-B-6 Certificates are outstanding, the Class
II-B-6 Principal Balance will equal the difference, if any, between the Group II
Adjusted Pool Amount as of the preceding Distribution Date less the sum of the
Group II-A Principal Balance, the Class II-B-1 Principal Balance, the Class
II-B-2 Principal Balance, the Class II-B-3 Principal Balance, the Class II-B-4
Principal Balance and the Class II-B-5 Principal Balance as of such
Determination Date.

            Class II-B-6 Principal Distribution Amount: As to any Distribution
Date, any amount distributable to the Holders of the Class II-B-6 Certificates
pursuant to Paragraph eighteenth of Section 4.01(a)(ii).

            Class II-B-6 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class II-B-6 Interest
Shortfall Amounts for prior Distribution Dates is in excess of the amounts
distributed in respect of the Class II-B-6 Certificates on prior Distribution
Dates pursuant to Paragraph seventeenth of Section 4.01(a)(ii).

            Class II-B-M1 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-B-M2 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

             Class II-B-M3 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-B-M4 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-B-M5 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-B-M6 Interest: A regular interest in the Middle-Tier REMIC
which is held as an asset of the Upper-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(iv) hereof.

            Class II-L Interest: The regular interest in the Lower-Tier REMIC
which is held as an asset of the Middle-Tier REMIC and is entitled to monthly
distributions as provided in Section 4.01(a)(v) hereof.

            Class A Certificate: Any of the Group I-A Certificates or Group II-A
Certificates.

            Class A Certificateholder: The registered holder of a Class A
Certificate.

            Class A Pass-Through Rate: As to any Distribution Date and the Class
I-A-R Certificates, the Class A Pass-Through Rate will be a per annum rate equal
to Net WAC of the Group I Mortgage Loans. As to any Distribution Date and the
Class I-A-1, Class I-A-2, Class I-A-IO, Class II-A-1, Class II-A-2 and Class
II-A-IO Certificates, the Class A Pass-Through Rate will be the Class I-A-1
Pass-Through Rate, Class I-A-2 Pass-Through Rate, Class I-A-IO Pass-Through
Rate, Class II-A-1 Pass-Through Rate, Class II-A-2 Pass-Through Rate or Class
II-A-IO Pass-Through Rate, respectively.

            Class A Unpaid Interest Shortfall: As to any Distribution Date and
any Class of Class A Certificates of a Group, the amount, if any, by which the
Group I-A Interest Shortfall Amounts or Group II-A Interest Shortfall Amounts
for such Class of such Group for prior Distribution Dates is in excess of the
amounts distributed in respect of such Class of such Group on prior Distribution
Dates pursuant to Paragraph second of Section 4.01(a)(i).

             Class B Certificate: Any of the Group I-B Certificates or the Group
II-B Certificates.

            Class B Certificateholder: The registered holder of a Class B
Certificate.

            Class B Distribution Amount: Any of the Class I-B-1 Distribution
Amount, Class I-B-1-IO Distribution Amount, Class I-B-2 Distribution Amount,
Class I-B-2-IO Distribution Amount, Class I-B-3 Distribution Amount, Class I-B-4
Distribution Amount, Class I-B-5 Distribution Amount, Class I-B-6 Distribution
Amount, Class II-B-1 Distribution Amount, Class II-B-1-IO Distribution Amount,
Class II-B-2 Distribution Amount, Class II-B-2-IO Distribution Amount, Class
II-B-3 Distribution Amount, Class II-B-4 Distribution Amount, Class II-B-5
Distribution Amount or Class II-B-6 Distribution Amount.

            Class B Interest Accrual Amount: With respect to a Group and as to
any Distribution Date, the sum of the Interest Accrual Amounts for the Classes
of Class B Certificates of such Group with respect to such Distribution Date.

             Class B Interest Percentage: With respect to any Distribution Date
and any Class of Class B Certificates of a Group, the percentage calculated by
dividing the Interest Accrual Amount of such Class (determined without regard to
clause (ii) of the definition thereof) by the Class B Interest Accrual Amount
for such Group (determined without regard to clause (ii) of the definition of
each related Interest Accrual Amount).

            Class B Interest Shortfall Amount: Any of the Class I-B-1 Interest
Shortfall Amount, Class I-B-1-IO Interest Shortfall Amount, Class I-B-2 Interest
Shortfall Amount, Class I-B-2-IO Interest Shortfall Amount, Class I-B-3 Interest
Shortfall Amount, Class I-B-4 Interest Shortfall Amount, Class I-B-5 Interest
Shortfall Amount, Class I-B-6 Interest Shortfall Amount, Class II-B-1 Interest
Shortfall Amount, Class II-B-1-IO Interest Shortfall Amount, Class II-B-2
Interest Shortfall Amount, Class II-B-2-IO Interest Shortfall Amount, Class
II-B-3 Interest Shortfall Amount, Class II-B-4 Interest Shortfall Amount, Class
II-B-5 Interest Shortfall Amount or Class II-B-6 Interest Shortfall Amount.

            Class B Optimal Principal Amount: Any of the Class I-B-1 Optimal
Principal Amount, Class I-B-2 Optimal Principal Amount, Class I-B-3 Optimal
Principal Amount, Class I-B-4 Optimal Principal Amount, Class I-B-5 Optimal
Principal Amount, Class I-B-6 Optimal Principal Amount, Class II-B-1 Optimal
Principal Amount, Class II-B-2 Optimal Principal Amount, Class II-B-3 Optimal
Principal Amount, Class II-B-4 Optimal Principal Amount, Class II-B-5 Optimal
Principal Amount or Class II-B-6 Optimal Principal Amount.

            Class B Pass-Through Rate: Any of the Group I-B Pass-Through Rates
or the Group II-B Pass-Through Rates.

            Class B Principal Balance: An amount equal to the sum of the Group
I-B Principal Balance and the Group II-B Principal Balance.

            Class B Principal Distribution Amount: Any of the Class I-B-1
Principal Distribution Amount, Class I-B-2 Principal Distribution Amount, Class
I-B-3 Principal Distribution Amount, Class I-B-4 Principal Distribution Amount,
Class I-B-5 Principal Distribution Amount, Class I-B-6 Principal Distribution
Amount, Class II-B-1 Principal Distribution Amount, Class II-B-2 Principal
Distribution Amount, Class II-B-3 Principal Distribution Amount, Class II-B-4
Principal Distribution Amount, Class II-B-5 Principal Distribution Amount or
Class II-B-6 Principal Distribution Amount.

            Class B Unpaid Interest Shortfall: Any of the Class I-B-1 Unpaid
Interest Shortfall, Class I-B-1-IO Unpaid Interest Shortfall, Class I-B-2 Unpaid
Interest Shortfall, Class I-B-2-IO Unpaid Interest Shortfall, Class I-B-3 Unpaid
Interest Shortfall, Class I-B-4 Unpaid Interest Shortfall, Class I-B-5 Unpaid
Interest Shortfall, Class I-B-6 Unpaid Interest Shortfall, Class II-B-1 Unpaid
Interest Shortfall, Class II-B-1-IO Unpaid Interest Shortfall, Class II-B-2
Unpaid Interest Shortfall, Class II-B-2-IO Unpaid Interest Shortfall, Class
II-B-3 Unpaid Interest Shortfall, Class II-B-4 Unpaid Interest Shortfall, Class
II-B-5 Unpaid Interest Shortfall or Class II-B-6 Unpaid Interest Shortfall.

            Clearing Agency: An organization registered as a "clearing agency"
pursuant to Section 17A of the Exchange Act. The initial Clearing Agency shall
be The Depository Trust Company.

            Clearing Agency Participant: A broker, dealer, bank, financial
institution or other Person for whom a Clearing Agency effects book-entry
transfers of securities deposited with the Clearing Agency.

            Closing Date: The date of initial issuance of the Certificates, as
set forth in Section 11.20.

            Code: The Internal Revenue Code of 1986, as it may be amended from
time to time, any successor statutes thereto, and applicable U.S. Department of
the Treasury temporary or final regulations promulgated thereunder.

            Commission: The United States Securities and Exchange Commission.

            Compensating Interest: With respect to any Distribution Date and
each Group, the least of (a) the aggregate Prepayment Interest Shortfall on the
Mortgage Loans in the related Loan Group for such Distribution Date, (b) the
product of (i) 1/12th of 0.20% and (ii) the Pool Balance of the Mortgage Loans
in such Loan Group for such Distribution Date and (c) the Available Master
Servicing Compensation with respect to such Loan Group for such Distribution
Date.

            Co-op Shares: Shares issued by private non-profit housing
corporations.

            Corporate Trust Office: With respect to (a) the Trustee, the office
of the Trustee at which at any particular time its duties under this Agreement
shall be administered, which office, at the date of the execution of this
instrument, is located at 452 Fifth Avenue, New York, New York 10018, Attention:
WFMBS 2006-AR18 and (b) the Paying Agent, Certificate Registrar and
Authenticating Agent, for Certificate transfer purposes at Wells Fargo Center,
Sixth Street and Marquette Avenue, Minneapolis, Minnesota 55479 Attn: Corporate
Trust Services--WFMBS 2006-AR18, and for all other purposes at 9062 Old
Annapolis Blvd., Columbia, Maryland 21045 Attn: Corporate Trust Services--WFMBS
2006-AR18.

            Corresponding Upper-Tier Class or Classes: As to each of the
following Uncertificated Middle-Tier Interests, the Corresponding Upper-Tier
Class or Classes, as follows:


Uncertificated Middle-Tier
  Interest   Corresponding         Upper-Tier Class or Classes
Class I-A-M1 Interest             Class I-A-1, Class I-A-2 and Class I-A-IO
                                 Certificates
Class I-A-MUR Interest            Class I-A-R Interest
Class II-A-M1 Interest            Class II-A-1, Class II-A-2 and Class II-A-IO
                                 Certificates
Class I-B-M1 Interest              Class I-B-1 and Class I-B-1-IO Certificates
Class I-B-M2 Interest             Class I-B-2 and Class I-B-2-IO Certificates
Class I-B-M3 Interest             Class I-B-3 Certificates
Class I-B-M4 Interest             Class I-B-4 Certificates
Class I-B-M5 Interest             Class I-B-5 Certificates
Class I-B-M6 Interest             Class I-B-6 Certificates
Class II-B-M1 Interest            Class II-B-1 and Class II-B-1-IO Certificates
Class II-B-M2 Interest            Class II-B-2 and Class II-B-2-IO Certificates
Class II-B-M3 Interest            Class II-B-3 Certificates
Class II-B-M4 Interest            Class II-B-4 Certificates
Class II-B-M5 Interest            Class II-B-5 Certificates
Class II-B-M6 Interest            Class II-B-6 Certificates

            Current Class I-B-1 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class I-B-2, Class I-B-3, Class I-B-4,
Class I-B-5 and Class I-B-6 Certificates by the Group I Aggregate Principal
Balance. As to the first Distribution Date, the Original Class I-B-1 Fractional
Interest.

            Current Class I-B-2 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class I-B-3, Class I-B-4, Class I-B-5
and Class I-B-6 Certificates by the Group I Aggregate Principal Balance. As to
the first Distribution Date, the Original Class I-B-2 Fractional Interest.

            Current Class I-B-3 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class I-B-4, Class I-B-5 and Class
I-B-6 Certificates by the Group I Aggregate Principal Balance. As to the first
Distribution Date, the Original Class I-B-3 Fractional Interest.

            Current Class I-B-4 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class I-B-5 and Class I-B-6
Certificates by the Group I Aggregate Principal Balance. As to the first
Distribution Date, the Original Class I-B-4 Fractional Interest.

             Current Class I-B-5 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the Principal Balance of the Class I-B-6 Certificates by the Group I Aggregate
Principal Balance. As to the first Distribution Date, the Original Class I-B-5
Fractional Interest.

            Current Class II-B-1 Fractional Interest: As to any Distribution
Date subsequent to the first Distribution Date, the percentage obtained by
dividing the sum of the Principal Balances of the Class II-B-2, Class II-B-3,
Class II-B-4, Class II-B-5 and Class II-B-6 Certificates by the Group II
Aggregate Principal Balance. As to the first Distribution Date, the Original
Class II-B-1 Fractional Interest.

            Current Class II-B-2 Fractional Interest: As to any Distribution
Date subsequent to the first Distribution Date, the percentage obtained by
dividing the sum of the Principal Balances of the Class II-B-3, Class II-B-4,
Class II-B-5 and Class II-B-6 Certificates by the Group II Aggregate Principal
Balance. As to the first Distribution Date, the Original Class II-B-2 Fractional
Interest.

            Current Class II-B-3 Fractional Interest: As to any Distribution
Date subsequent to the first Distribution Date, the percentage obtained by
dividing the sum of the Principal Balances of the Class II-B-4, Class II-B-5 and
Class II-B-6 Certificates by the Group II Aggregate Principal Balance. As to the
first Distribution Date, the Original Class II-B-3 Fractional Interest.

            Current Class II-B-4 Fractional Interest: As to any Distribution
Date subsequent to the first Distribution Date, the percentage obtained by
dividing the sum of the Principal Balances of the Class II-B-5 and Class II-B-6
Certificates by the Group II Aggregate Principal Balance. As to the first
Distribution Date, the Original Class II-B-4 Fractional Interest.

            Current Class II-B-5 Fractional Interest: As to any Distribution
Date subsequent to the first Distribution Date, the percentage obtained by
dividing the Principal Balance of the Class II-B-6 Certificates by the Group II
Aggregate Principal Balance. As to the first Distribution Date, the Original
Class II-B-5 Fractional Interest.

            Current Class B Interest Distribution Amount: As to any Distribution
Date and either Group of Class B Certificates, the amount distributed in respect
of the related Classes of Class B Certificates pursuant to Paragraphs first,
fourth, seventh, tenth, thirteenth and sixteenth of Section 4.01(a)(ii) on such
Distribution Date.

            Current Group I-A Interest Distribution Amount: As to any
Distribution Date, the amount distributed in respect of the Classes of Group I-A
Certificates pursuant to Paragraph first clause (A) of Section 4.01(a)(i) on
such Distribution Date.

            Current Group II-A Interest Distribution Amount: As to any
Distribution Date, the amount distributed in respect of the Classes of Group
II-A Certificates pursuant to Paragraph first clause (B) of Section 4.01(a)(i)
on such Distribution Date.

            Curtailment: Any Principal Prepayment made by a Mortgagor which is
not a Prepayment in Full.

            Curtailment Interest Shortfall: On any Distribution Date with
respect to a Group I Mortgage Loan or Group II Mortgage Loan which was the
subject of a Curtailment:

            (A)    in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Mid-Month Receipt Period and such Curtailment is
                  received by the Servicer on or after the Determination Date in
                  the month preceding the month of such Distribution Date but
                  prior to the first day of the month of such Distribution Date,
                  the amount of interest that would have accrued at the Net
                  Mortgage Interest Rate on the amount of such Curtailment from
                  the day of its receipt or, if earlier, its application by the
                  Servicer through the last day of the month preceding the month
                  of such Distribution Date; and

            (B)    in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Prior Month Receipt Period and such Curtailment
                  is received by the Servicer during the month preceding the
                  month of such Distribution Date, the amount of interest that
                  would have accrued at the Net Mortgage Interest Rate on the
                  amount of such Curtailment from the day of its receipt or, if
                  earlier, its application by the Servicer through the last day
                  of the month in which such Curtailment is received.

            Custodial Agreement: The Custodial Agreement, dated as of October
24, 2006, among the Custodian, the Depositor, the Master Servicer and the
Trustee, which agreement is attached hereto as Exhibit E, as the same may be
amended or modified from time to time in accordance with the terms thereof.

            Custodial P&I Account: The Custodial P&I Account, as defined in each
of the Servicing Agreements, with respect to the Mortgage Loans. In determining
whether the Custodial P&I Account under any Servicing Agreement is "acceptable"
to the Master Servicer (as may be required by the definition of "Eligible
Account" contained in the Servicing Agreements), the Master Servicer shall
require that any such account shall be acceptable to each of the Rating
Agencies.

            Custodian: Wells Fargo Bank, or its successor in interest under the
Custodial Agreement. Initially, the custodial functions shall be performed by
the Corporate Trust Services division of Wells Fargo Bank.

            Cut-Off Date: The first day of the month of initial issuance of the
Certificates as set forth in Section 11.01.

            Cut-Off Date Aggregate Principal Balance: The sum of the Cut-Off
Date Group I Aggregate Principal Balance and the Cut-Off Date Group II Aggregate
Principal Balance.

            Cut-Off Date Group I Aggregate Principal Balance: The aggregate of
the Cut-Off Date Principal Balances of the Group I Mortgage Loans as set forth
in Section 11.02(a).

            Cut-Off Date Group II Aggregate Principal Balance: The aggregate of
the Cut-Off Date Principal Balances of the Group II Mortgage Loans as set forth
in Section 11.02(b).

            Cut-Off Date Principal Balance: As to each Mortgage Loan, its unpaid
principal balance as of the close of business on the Cut-Off Date (but without
giving effect to any Unscheduled Principal Receipts received or applied on the
Cut-Off Date), reduced by all payments of principal due on or before the Cut-Off
Date and not paid, and increased by scheduled monthly payments of principal due
after the Cut-Off Date but received by the related Servicer on or before the
Cut-Off Date.

            Debt Service Reduction: With respect to any Mortgage Loan, a
reduction in the scheduled Monthly Payment for such Mortgage Loan by a court of
competent jurisdiction in a proceeding under the Bankruptcy Code, except such a
reduction constituting a Deficient Valuation.

            Deficient Valuation: With respect to any Mortgage Loan, a valuation
by a court of competent jurisdiction of the Mortgaged Property in an amount less
than the then-outstanding indebtedness under the Mortgage Loan, or any reduction
in the amount of principal to be paid in connection with any scheduled Monthly
Payment that results in a permanent forgiveness of principal, which valuation or
reduction results from a proceeding under the Bankruptcy Code.

            Definitive Certificates: As defined in Section 5.01(b).

            Denomination: The amount, if any, specified on the face of each
Certificate (other than an Interest Only Certificate) representing the principal
portion of the Cut-Off Date Aggregate Principal Balance evidenced by such
Certificate. As to an Interest Only Certificate, the amount specified on the
face of such Certificate representing the portion of the Original Notional
Amount of the related Class.

            Depositor: Wells Fargo Asset Securities Corporation, or its
successor in interest.

            Determination Date: The 17th day of the month in which the related
Distribution Date occurs, or if such 17th day is not a Business Day, the
Business Day preceding such 17th day.

            Distribution Date: The 25th day of any month, beginning in the month
following the month of initial issuance of the Certificates, or if such 25th day
is not a Business Day, the Business Day following such 25th day.

            Distribution Date Statement: As defined in Section 4.04(a).

            Document Transfer Date: The 60th day following the occurrence of a
Document Transfer Event.

            Document Transfer Event: The occurrence of either of the following:
(i) Wells Fargo Bank is no longer the Servicer of any of the Mortgage Loans or
(ii) the senior, unsecured long-term debt rating of Wells Fargo & Company is
less than "BBB-" by Fitch.

            Due Date: With respect to any Mortgage Loan, the day of the month in
which the Monthly Payment on such Mortgage Loan is scheduled to be paid.

            Eligible Account: One or more accounts (i) that are maintained with
a depository institution (which may be the Master Servicer) whose long-term debt
obligations (or, in the case of a depository institution which is part of a
holding company structure, the long-term debt obligations of such parent holding
company) at the time of deposit therein are rated at least "AA" (or the
equivalent) by each Rating Agency, (ii) the deposits in which are fully insured
by the FDIC through either the Bank Insurance Fund or the Savings Association
Insurance Fund, (iii) the deposits in which are insured by the FDIC through
either the Bank Insurance Fund or the Savings Association Insurance Fund (to the
limit established by the FDIC) and the uninsured deposits in which accounts are
otherwise secured, as evidenced by an Opinion of Counsel delivered to the
Trustee, such that the Trustee, on behalf of the Certificateholders has a claim
with respect to the funds in such accounts or a perfected first security
interest against any collateral securing such funds that is superior to claims
of any other depositors or creditors of the depository institution with which
such accounts are maintained, (iv) that are trust accounts maintained with the
trust department of a federal or state chartered depository institution or trust
company acting in its fiduciary capacity or (v) such other account that is
acceptable to each of the Rating Agencies and would not cause the Trust Estate
to fail to qualify as three separate REMICs or result in the imposition of any
federal tax on any of the Upper-Tier REMIC, the Middle-Tier REMIC or the
Lower-Tier REMIC.

            Eligible Investments: At any time, any one or more of the following
obligations and securities which shall mature not later than the Business Day
preceding the Distribution Date next succeeding the date of such investment,
provided that such investments continue to qualify as "cash flow investments" as
defined in Code Section 860G(a)(6):

            (i) obligations of the United States of America or any agency
      thereof, provided such obligations are backed by the full faith and credit
      of the United States of America;

            (ii) general obligations of or obligations guaranteed by any state
      of the United States of America or the District of Columbia receiving the
      highest short-term or highest long-term rating of each Rating Agency, or
      such lower rating as would not result in the downgrading or withdrawal of
      the rating then assigned to any of the Certificates by either Rating
      Agency or result in any of such rated Certificates being placed on credit
      review status (other than for possible upgrading) by either Rating Agency;

             (iii) commercial or finance company paper which is then rated in the
      highest long-term commercial or finance company paper rating category of
      each Rating Agency or the highest short-term rating category of each
      Rating Agency, or such lower rating category as would not result in the
      downgrading or withdrawal of the rating then assigned to any of the
      Certificates by either Rating Agency or result in any of such rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by either Rating Agency;

            (iv) certificates of deposit, demand or time deposits, federal funds
      or banker's acceptances issued by any depository institution or trust
      company incorporated under the laws of the United States or of any state
      thereof and subject to supervision and examination by federal and/or state
      banking authorities, provided that the commercial paper and/or debt
      obligations of such depository institution or trust company (or in the
      case of the principal depository institution in a holding company system,
      the commercial paper or debt obligations of such holding company) are then
      rated in the highest short-term or the highest long-term rating category
      for such securities of each of the Rating Agencies, or such lower rating
      categories as would not result in the downgrading or withdrawal of the
      rating then assigned to any of the Certificates by either Rating Agency or
      result in any of such rated Certificates being placed on credit review
      status (other than for possible upgrading) by either Rating Agency;

            (v) guaranteed reinvestment agreements issued by any bank, insurance
      company or other corporation acceptable to each Rating Agency at the time
      of the issuance of such agreements;

            (vi) repurchase agreements on obligations with respect to any
      security described in clauses (i) or (ii) above or any other security
      issued or guaranteed by an agency or instrumentality of the United States
      of America, in either case entered into with a depository institution or
      trust company (acting as principal) described in (iv) above;

            (vii) securities (other than stripped bonds or stripped coupon
      securities) bearing interest or sold at a discount issued by any
      corporation incorporated under the laws of the United States of America or
      any state thereof which, at the time of such investment or contractual
      commitment providing for such investment, are then rated in the highest
      short-term or the highest long-term rating category by each Rating Agency,
      or in such lower rating category as would not result in the downgrading or
      withdrawal of the rating then assigned to any of the Certificates by
      either Rating Agency or result in any of such rated Certificates being
      placed on credit review status (other than for possible upgrading) by
      either Rating Agency;

             (viii) such other investments acceptable to each Rating Agency as
      would not result in the downgrading of the rating then assigned to the
      Certificates by either Rating Agency or result in any of such rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by either Rating Agency; and

            (ix) any mutual fund, money market fund, common trust fund or other
      pooled investment vehicle, the assets of which are limited to instruments
       that otherwise would constitute Eligible Investments hereunder, including
      any such fund that is managed by the Trustee or Master Servicer or any
      affiliate of the Trustee or Master Servicer or for which the Trustee or
      Master Servicer or any of its affiliates acts as an adviser as long as
      such fund is rated in at least the highest rating category by each Rating
      Agency.

            In no event shall an instrument be an Eligible Investment if such
instrument evidences either (i) a right to receive only interest payments with
respect to the obligations underlying such instrument, or (ii) both principal
and interest payments derived from obligations underlying such instrument and
the interest and principal payments with respect to such instrument provide a
yield to maturity at the date of investment of greater than 120% of the yield to
maturity at par of such underlying obligations.

            ERISA: The Employee Retirement Income Security Act of 1974, as
amended.

            ERISA Prohibited Holder: As defined in Section 5.02(d).

            Errors and Omissions Policy: As defined in each of the Servicing
Agreements.

            Event of Default: Any of the events specified in Section 7.01.

            Exchange Act: The Securities Exchange Act of 1934, as amended.

            FDIC: The Federal Deposit Insurance Corporation or any successor
thereto.

            Fidelity Bond: As defined in each of the Servicing Agreements.

            Final Distribution Date: The Distribution Date on which the final
distribution is made pursuant to Section 9.01 in respect of (i) the Group I-A
Certificates and the Group I-B Certificates or (ii) the Group II-A Certificates
and the Group II-B Certificates. The Final Distribution Date for the
Certificates described in clauses (i) and (ii) may be the same or different.

            Final Scheduled Maturity Date: The Final Scheduled Maturity Date for
each Class of Certificates (other than the Class I-A-IO and Class II-A-IO
Certificates) is November 25, 2036, which corresponds to the "latest possible
maturity date" for purposes of Section 860G(a)(1) of the Internal Revenue Code
of 1986, as amended. The Final Scheduled Maturity Date for the Class I-A-IO
Certificates is September 25, 2016. The Final Scheduled Maturity Date for the
Class II-A-IO Certificates is September 25, 2013.

            Fitch: Fitch Ratings, or its successor in interest.

            Form 8-K: A Current Report on Form 8-K under the Exchange Act.

            Form 8-K Disclosure Information: As defined in Section 3.12(c).

            Form 10-D: An Asset-Backed Issuer Distribution Report on Form 10-D
under the Exchange Act.

            Form 10-K: An Annual Report on Form 10-K under the Exchange Act.

            Form 15: A Form 15 Suspension Notification under the Exchange Act.

            Full Unscheduled Principal Receipt: Any Unscheduled Principal
Receipt with respect to a Mortgage Loan (i) in the amount of the outstanding
principal balance of such Mortgage Loan and resulting in the full satisfaction
of such Mortgage Loan or (ii) representing Liquidation Proceeds other than
Partial Liquidation Proceeds.

            Gross Margin: As to each Mortgage Loan, the fixed percentage set
forth in the related Mortgage Note and indicated in the Mortgage Loan Schedule
as the "Gross Margin," which percentage is added to the applicable Index on each
Adjustment Date to determine (subject to rounding, the Periodic Cap and the Rate
Ceiling) the Mortgage Interest Rate on such Mortgage Loan until the next
Adjustment Date.

            Group: Either Group I or Group II.

            Group I: The Group I-A and Group I-B Certificates.

            Group I Adjusted Pool Amount: With respect to any Distribution Date,
the aggregate of the Cut-Off Date Principal Balances of the Group I Mortgage
Loans minus the sum of (i) all amounts in respect of principal received in
respect of the Group I Mortgage Loans (including, without limitation, amounts
received as Monthly Payments, Periodic Advances, Unscheduled Principal Receipts
and Substitution Principal Amounts) and distributed to Holders of the
Certificates on such Distribution Date and all prior Distribution Dates, (ii)
the principal portion of all Liquidated Loan Losses incurred on such Group I
Mortgage Loans for which the Liquidation Proceeds were received from the Cut-Off
Date through the end of the Applicable Unscheduled Principal Receipt Period with
respect to Full Unscheduled Principal Receipts for such Distribution Date and
(iii) the principal portion of all Bankruptcy Losses (other than Debt Service
Reductions) incurred on the Group I Mortgage Loans from the Cut-Off Date through
the end of the period corresponding to the Applicable Unscheduled Principal
Receipt Period with respect to Full Unscheduled Principal Receipts for such
Distribution Date.

            Group I Aggregate Principal Balance: As of any Determination Date,
an amount equal to the sum of the Group I-A Principal Balance and the Group I-B
Principal Balance as of such date.

            Group I Class B Percentage: Any of the Class I-B-1 Percentage, Class
I-B-2 Percentage, Class I-B-3 Percentage, Class I-B-4 Percentage, Class I-B-5
Percentage or Class I-B-6 Percentage.

            Group I Class B Prepayment Percentage: Any of the Class I-B-1
Prepayment Percentage, Class I-B-2 Prepayment Percentage, Class I-B-3 Prepayment
Percentage, Class I-B-4 Prepayment Percentage, Class I-B-5 Prepayment Percentage
or Class I-B-6 Prepayment Percentage.

            Group I Mortgage Loans: Those Mortgage Loans identified in the
Mortgage Loan Schedule as Group I Mortgage Loans.

            Group I Pool Balance: As to any Distribution Date, the aggregate
Scheduled Principal Balances of all Group I Mortgage Loans that were Outstanding
Mortgage Loans on the Due Date in the month preceding the month of such
Distribution Date.

            Group I Pool Distribution Amount: As of any Distribution Date, the
funds eligible for distribution to the Group I-A Certificates and Group I-B
Certificates on such Distribution Date, which shall be the sum of (i) all
previously undistributed payments or other receipts on account of principal and
interest on or in respect of the Group I Mortgage Loans (including, without
limitation, the proceeds of any repurchase of a Group I Mortgage Loan by the
Depositor and any Substitution Principal Amount) received by the Master Servicer
with respect to the applicable Remittance Date in the month of such Distribution
Date and any Unscheduled Principal Receipts received by the Master Servicer on
or prior to the Business Day preceding such Distribution Date, (ii) all Periodic
Advances made with respect to Group I Mortgage Loans by a Servicer pursuant to
the related Servicing Agreement or Periodic Advances with respect to Group I
Mortgage Loans made by the Master Servicer or the Trustee pursuant to Section
3.03, (iii) any remaining Reimbursement Amount with respect to a Group I
Mortgage Loan as provided in Section 4.01(a) and (iv) all other amounts
(including any Insurance Proceeds and Compensating Interest) with respect to a
Group I Mortgage Loan required to be placed in the Certificate Account by the
Servicer on or before the applicable Remittance Date or by the Master Servicer
or the Trustee on or prior to the Distribution Date, but excluding the
following:

            (a) amounts received as late payments of principal or interest with
      respect to a Group I Mortgage Loan and respecting which the Master
      Servicer or the Trustee has made one or more unreimbursed Periodic
      Advances;

             (b) the portion of Liquidation Proceeds used to reimburse any
      unreimbursed Periodic Advances with respect to a Group I Mortgage Loan by
      the Master Servicer or the Trustee;

            (c) that portion of each payment of interest on a particular Group I
      Mortgage Loan which represents (i) the applicable Servicing Fee and (ii)
      the Master Servicing Fee;

            (d) all amounts representing scheduled payments of principal and
      interest on Group I Mortgage Loans due after the Due Date occurring in the
      month in which such Distribution Date occurs;

            (e) all Unscheduled Principal Receipts received by the Servicers
      with respect to Group I Mortgage Loans after the Applicable Unscheduled
      Principal Receipt Period relating to the Distribution Date for the
      applicable type of Unscheduled Principal Receipt, and all related payments
      of interest on such amounts;

            (f) all repurchase proceeds with respect to Group I Mortgage Loans
       repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08 on or
      following the Determination Date in the month in which such Distribution
      Date occurs and the Substitution Principal Amounts with respect to any
      Group I Mortgage Loans for which Group I Mortgage Loans were substituted
      on or following the Determination Date in the month in which such
      Distribution Date occurs;

            (g) that portion of Liquidation Proceeds and REO Proceeds with
      respect to any Group I Mortgage Loan which represents any unpaid Servicing
      Fee or Master Servicing Fee;

            (h) all income from Eligible Investments that is held in the
      Certificate Account for the account of the Master Servicer;

            (i) Liquidation Profits in respect of Group I Mortgage Loans;

            (j) Month End Interest in respect of Group I Mortgage Loans;

            (k) all amounts reimbursable to a Servicer for PMI Advances in
      respect of Group I Mortgage Loans; and

             (l) all other amounts permitted to be withdrawn from the Certificate
      Account, to the extent not covered by clauses (a) through (k) above, or
      not required to be deposited in the Certificate Account under this
      Agreement.

             Group I Subordinated Percentage: As to any Distribution Date, the
percentage which is the difference between 100% and the Group I-A Percentage for
such date.

            Group I Subordinated Prepayment Percentage: As to any Distribution
Date, the percentage which is the difference between 100% and the Group I-A
Prepayment Percentage for such date.

            Group I-A Certificate: Any Class I-A-1, Class I-A-2, Class I-A-IO or
Class I-A-R Certificate.

            Group I-A Distribution Amount: As to any Distribution Date and any
Class of Group I-A Certificates (other than the Classes of Senior Interest Only
Certificates), the amount distributable to such Class of Group I-A Certificates
pursuant to Paragraphs first clause (A), second clause (A) and third clause (A)
of Section 4.01(a)(i). As to any Distribution Date and a Class of Senior
Interest Only Certificates, the amount distributable to such Class pursuant to
Paragraphs first clause (A) and second clause (A) of Section 4.01(a)(i).

            Group I-A Interest Accrual Amount: As to any Distribution Date, the
sum of the Interest Accrual Amounts for the Classes of Group I-A Certificates
with respect to such Distribution Date.

            Group I-A Interest Percentage: As to any Distribution Date and any
Class of Group I-A Certificates, the percentage calculated by dividing the
Interest Accrual Amount of such Class (determined without regard to clause (ii)
of the definition thereof) by the Group I-A Interest Accrual Amount (determined
without regard to clause (ii) of the definition of each Interest Accrual
Amount).

            Group I-A Interest Shortfall Amount: As to any Distribution Date and
any Class of Group I-A Certificates, any amount by which the Interest Accrual
Amount of such Class with respect to such Distribution Date exceeds the amount
distributed in respect of such Class on such Distribution Date pursuant to
Paragraph first clause (A) of Section 4.01(a)(i).

            Group I-A Loss Denominator: As to any Determination Date, an amount
equal to the Group I-A Principal Balance.

            Group I-A Loss Percentage: As to any Determination Date and any
Class of Group I-A Certificates, the percentage calculated by dividing the
Principal Balance of such Class by the Group I-A Loss Denominator (determined
without regard to any such Principal Balance of any Class of Group I-A
Certificates not then outstanding), in each case determined as of the preceding
Determination Date.

            Group I-A Optimal Amount: As to any Distribution Date, the sum for
such Distribution Date of (i) the Group I-A Interest Accrual Amount, (ii) the
Aggregate Group I-A Unpaid Interest Shortfall and (iii) the Group I-A Optimal
Principal Amount.

            Group I-A Optimal Principal Amount: As to any Distribution Date, an
amount equal to the sum of (I) the sum, as to each Group I Mortgage Loan that is
an Outstanding Mortgage Loan, of:

            (i) the Group I-A Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Group I-A Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Group I-A Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Group I-A Percentage of the Substitution Principal Amount
      with respect to each Group I Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

      (II) the Group I-A Prepayment Percentage of the Recovery for Loan Group I
      for such Distribution Date.

            Group I-A Percentage: As to any Distribution Date occurring on or
prior to the Subordination Depletion Date for Group I, the lesser of (i) 100%
and (ii) the percentage obtained by dividing the Group I-A Principal Balance
(determined as of the Determination Date preceding such Distribution Date) by
the Group I Pool Balance. As to any Distribution Date occurring subsequent to
the Subordination Depletion Date for Group I, 100% or such lesser percentage
which will cause the Group I-A Principal Balance to decline to zero following
the distribution made on such Distribution Date.

            Group I-A Prepayment Percentage: As to any Distribution Date to and
including the Distribution Date in October 2013, 100%. As to any Distribution
Date subsequent to October 2013 to and including the Distribution Date in
October 2014, the Group I-A Percentage as of such Distribution Date plus 70% of
the Group I Subordinated Percentage as of such Distribution Date. As to any
Distribution Date subsequent to October 2014 to and including the Distribution
Date in October 2015, the Group I-A Percentage as of such Distribution Date plus
60% of the Group I Subordinated Percentage as of such Distribution Date. As to
any Distribution Date subsequent to October 2015 to and including the
Distribution Date in October 2016, the Group I-A Percentage as of such
Distribution Date plus 40% of the Group I Subordinated Percentage as of such
Distribution Date. As to any Distribution Date subsequent to October 2016 to and
including the Distribution Date in October 2017, the Group I-A Percentage as of
such Distribution Date plus 20% of the Group I Subordinated Percentage as of
such Distribution Date. As to any Distribution Date subsequent to October 2017,
the Group I-A Percentage as of such Distribution Date.

            No reduction of the level of the Group I-A Prepayment Percentage
shall occur on any Distribution Date unless, as of such Distribution Date, (A)
the average outstanding principal balance on such Distribution Date and for the
preceding five Distribution Dates of the Group I Mortgage Loans that were
delinquent 60 days or more (including for this purpose any Group I Mortgage
Loans in foreclosure and Group I Mortgage Loans with respect to which the
related Mortgaged Property has been acquired by the Trust Estate) does not
exceed 50% of the Group I-B Principal Balance; and (B) cumulative Realized
Losses on the Group I Mortgage Loans do not exceed the following percentages of
the Original Group I-B Subordinated Principal Amount: (1) 30%, if such
Distribution Date occurs between and including November 2013 and October 2014
(2) 35%, if such Distribution Date occurs between and including November 2014
and October 2015, (3) 40%, if such Distribution Date occurs between and
including November 2015 and October 2016, (4) 45%, if such Distribution Date
occurs between and including November 2016 and October 2017, and (5) 50%, if
such Distribution Date occurs during or after November 2017.

            Notwithstanding the foregoing, with respect to any Distribution Date
on which the preceding criteria are not met, the reduction of the Group I-A
Prepayment Percentage described in the second through sixth sentences of this
definition of Group I-A Prepayment Percentage shall not be applicable with
respect to such Distribution Date. In such event, the Group I-A Prepayment
Percentage for such Distribution Date will be determined in accordance with the
applicable provision, as set forth in the first through fifth sentences of this
definition, which was actually used to determine the Group I-A Prepayment
Percentage for the Distribution Date occurring in the October preceding such
Distribution Date (it being understood that for the purposes of the
determination of the Group I-A Prepayment Percentage for the current
Distribution Date, the current Group I-A Percentage and Group I Subordinated
Percentage shall be utilized).

            In addition, if on any Distribution Date, prior to giving effect to
any distributions on such Distribution Date, (i) the Group I Subordinated
Percentage is equal to or greater than twice the Group I Subordinated Percentage
as of the Cut-Off Date, (ii) the average outstanding principal balance on such
Distribution Date and for the preceding five Distribution Dates of the Group I
Mortgage Loans that were delinquent 60 days or more (including for this purpose
any Group I Mortgage Loans in foreclosure and Group I Mortgage Loans with
respect to which the related Mortgaged Property has been acquired by the Trust
Estate) does not exceed 50% of the Group I-B Principal Balance and (iii)(A)
prior to the Distribution Date in November 2009, cumulative Realized Losses on
the Group I Mortgage Loans do not exceed 20% of the Original Group I-B
Subordinated Principal Amount, then the Group I-A Prepayment Percentage for such
Distribution Date will equal the Group I-A Percentage for such Distribution Date
plus 50% of the Group I Subordinated Percentage for such Distribution Date or
(B) on or after the Distribution Date in November 2009, cumulative Realized
Losses on the Group I Mortgage Loans do not exceed 30% of the Original Group I-B
Subordinated Principal Amount, then the Group I-A Prepayment Percentage for such
Distribution Date will equal the Group I-A Percentage for such Distribution
Date.

            Notwithstanding the foregoing, if on any Distribution Date, the
Group I-A Percentage exceeds such percentage as of the Cut-Off Date, then the
Group I-A Prepayment Percentage will equal 100%.

            If on any Distribution Date the allocation to the Group I-A
Certificates of Unscheduled Principal Receipts and other amounts in the
percentage required above would reduce the Group I-A Principal Balance below
zero, the Group I-A Prepayment Percentage for such Distribution Date will be
limited to the percentage necessary to reduce the Group I-A Principal Balance to
zero. In addition, once the Group I-A Principal Balance has been reduced to
zero, the Group I-A Prepayment Percentage will be 0%.

            With respect to any Distribution Date on which the Group I-A
Prepayment Percentage is reduced below the Group I-A Prepayment Percentage for
the prior Distribution Date, the Master Servicer shall certify to the Trustee,
based upon information provided by each Servicer as to the Mortgage Loans
serviced by it that the criteria set forth in this definition are met.

            Group I-A Principal Balance: As of any date, an amount equal to the
sum of the Principal Balances for the Group I-A Certificates.

            Group I-A Principal Distribution Amount: As to any Distribution
Date, the aggregate amount distributed in respect of the Classes of Group I-A
Certificates pursuant to Paragraph third clause (A) of Section 4.01(a)(i).

            Group I-A Shortfall Percentage: As to any Distribution Date and any
Class of Group I-A Certificates, the percentage calculated by dividing the Class
A Unpaid Interest Shortfall for such Class by the Aggregate Group I-A Unpaid
Interest Shortfall, in each case determined as of the day preceding the
applicable Distribution Date.

            Group I-B Certificate: Any one of the Class I-B-1 Certificates,
Class I-B-1-IO Certificates, Class I-B-2 Certificates, Class I-B-2-IO
Certificates, Class I-B-3 Certificates, Class I-B-4 Certificates, Class I-B-5
Certificates or Class I-B-6 Certificates.

            Group I-B Pass-Through Rate: As to any Distribution Date and the
Class I-B-3, Class I-B-4, Class I-B-5 and Class I-B-6 Certificates, the Group
I-B Pass-Through Rate will be a per annum rate equal to Net WAC of the Group I
Mortgage Loans. As to any Distribution Date and the Class I-B-1 and Class I-B-2
Certificates, the Group I-B Pass-Through Rate will be a per annum rate equal to
Net WAC of the Group I Mortgage Loans minus 0.223799%. As to any Distribution
Date and the Class I-B-1-IO and Class I-B-2-IO Certificates, the Group I-B
Pass-Through Rate will be the Class I-B-1-IO Pass-Through Rate or Class I-B-2-IO
Pass-Through Rate, respectively.

            Group I-B Principal Balance: As of any date, an amount equal to the
sum of the Class I-B-1 Principal Balance, Class I-B-2 Principal Balance, Class
I-B-3 Principal Balance, Class I-B-4 Principal Balance, Class I-B-5 Principal
Balance and Class I-B-6 Principal Balance.

            Group II: The Group II-A and Group II-B Certificates

            Group II Adjusted Pool Amount: With respect to any Distribution
Date, the aggregate of the Cut-Off Date Principal Balances of the Group II
Mortgage Loans minus the sum of (i) all amounts in respect of principal received
in respect of the Group II Mortgage Loans (including, without limitation,
amounts received as Monthly Payments, Periodic Advances, Unscheduled Principal
Receipts and Substitution Principal Amounts) and distributed to Holders of the
Certificates on such Distribution Date and all prior Distribution Dates, (ii)
the principal portion of all Liquidated Loan Losses incurred on such Group II
Mortgage Loans for which the Liquidation Proceeds were received from the Cut-Off
Date through the end of Applicable Unscheduled Principal Receipt Period with
respect to Full Unscheduled Principal Receipts for such Distribution Date and
(iii) the principal portion of all Bankruptcy Losses (other than Debt Service
Reductions) incurred on the Group II Mortgage Loans from the Cut-Off Date
through the end of the period corresponding to the Applicable Unscheduled
Principal Receipt Period with respect to Full Unscheduled Principal Receipts for
such Distribution Date.

            Group II Aggregate Principal Balance: As of any Determination Date,
an amount equal to the sum of the Group II-A Principal Balance and the Group
II-B Principal Balance as of such date.

             Group II Class B Percentage: Any of the Class II-B-1 Percentage,
Class II-B-2 Percentage, Class II-B-3 Percentage, Class II-B-4 Percentage, Class
II-B-5 Percentage or Class II-B-6 Percentage.

            Group II Class B Prepayment Percentage: Any of the Class II-B-1
Prepayment Percentage, Class II-B-2 Prepayment Percentage, Class II-B-3
Prepayment Percentage, Class II-B-4 Prepayment Percentage, Class II-B-5
Prepayment Percentage or Class II-B-6 Prepayment Percentage.

            Group II Mortgage Loans: Those Mortgage Loans identified in the
Mortgage Loan Schedule as Group II Mortgage Loans.

            Group II Pool Balance: As to any Distribution Date, the aggregate
Scheduled Principal Balances of all Group II Mortgage Loans that were
Outstanding Mortgage Loans on the Due Date in the month preceding the month of
such Distribution Date.

            Group II Pool Distribution Amount: As of any Distribution Date, the
funds eligible for distribution to the Group II-A Certificates and Group II-B
Certificates on such Distribution Date, which shall be the sum of (i) all
previously undistributed payments or other receipts on account of principal and
interest on or in respect of the Group II Mortgage Loans (including, without
limitation, the proceeds of any repurchase of a Group II Mortgage Loan by the
Depositor and any Substitution Principal Amount) received by the Master Servicer
with respect to the applicable Remittance Date in the month of such Distribution
Date and any Unscheduled Principal Receipts received by the Master Servicer on
or prior to the Business Day preceding such Distribution Date, (ii) all Periodic
Advances made with respect to Group II Mortgage Loans by a Servicer pursuant to
the related Servicing Agreement or Periodic Advances with respect to Group II
Mortgage Loans made by the Master Servicer or the Trustee pursuant to Section
3.03, (iii) any remaining Reimbursement Amount with respect to a Group II
Mortgage Loan as provided in Section 4.01(a) and (iv) all other amounts
(including any Insurance Proceeds and Compensating Interest) with respect to a
Group II Mortgage Loan required to be placed in the Certificate Account by the
Servicer on or before the applicable Remittance Date or by the Master Servicer
or the Trustee on or prior to the Distribution Date, but excluding the
following:

            (a) amounts received as late payments of principal or interest with
      respect to a Group II Mortgage Loan and respecting which the Master
      Servicer or the Trustee has made one or more unreimbursed Periodic
      Advances;

            (b) the portion of Liquidation Proceeds used to reimburse any
      unreimbursed Periodic Advances with respect to a Group II Mortgage Loan by
      the Master Servicer or the Trustee;

            (c) that portion of each payment of interest on a particular Group
      II Mortgage Loan which represents (i) the applicable Servicing Fee and
      (ii) the Master Servicing Fee;

            (d) all amounts representing scheduled payments of principal and
       interest on Group II Mortgage Loans due after the Due Date occurring in
      the month in which such Distribution Date occurs;

            (e) all Unscheduled Principal Receipts received by the Servicers
      with respect to Group II Mortgage Loans after the Applicable Unscheduled
      Principal Receipt Period relating to the Distribution Date for the
      applicable type of Unscheduled Principal Receipt, and all related payments
      of interest on such amounts;

            (f) all repurchase proceeds with respect to Group II Mortgage Loans
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08 on or
      following the Determination Date in the month in which such Distribution
      Date occurs and the Substitution Principal Amounts with respect to any
      Group II Mortgage Loans for which Group II Mortgage Loans were substituted
      on or following the Determination Date in the month in which such
      Distribution Date occurs;

            (g) that portion of Liquidation Proceeds and REO Proceeds with
      respect to any Group II Mortgage Loan which represents any unpaid
      Servicing Fee or Master Servicing Fee;

            (h) all income from Eligible Investments that is held in the
      Certificate Account for the account of the Master Servicer;

            (i) Liquidation Profits in respect of Group II Mortgage Loans;

            (j) Month End Interest in respect of Group II Mortgage Loans;

            (k) all amounts reimbursable to a Servicer for PMI Advances in
      respect of Group II Mortgage Loans; and

            (l) all other amounts permitted to be withdrawn from the Certificate
      Account, to the extent not covered by clauses (a) through (k) above, or
      not required to be deposited in the Certificate Account under this
      Agreement.

            Group II Subordinated Percentage: As to any Distribution Date, the
percentage which is the difference between 100% and the Group II-A Percentage
for such date.

            Group II Subordinated Prepayment Percentage: As to any Distribution
Date, the percentage which is the difference between 100% and the Group II-A
Prepayment Percentage for such date.

            Group II-A Certificate: Any Class II-A-1, Class II-A-2 or Class
II-A-IO Certificate.

             Group II-A Distribution Amount: As to any Distribution Date and any
Class of Group II-A Certificates (other than the Classes of Senior Interest Only
Certificates), the amount distributable to such Class pursuant to Paragraphs
first clause (B), second clause (B) and third clause (B) of Section 4.01(a)(i).
As to any Distribution Date and a Class of Interest Only Certificates, the
amount distributable to such Class pursuant to Paragraphs first clause (B) and
second clause (B) of Section 4.01(a)(i).

             Group II-A Interest Accrual Amount: As to any Distribution Date, the
sum of the Interest Accrual Amounts for the Classes of Group II-A Certificates
with respect to such Distribution Date.

            Group II-A Interest Percentage: As to any Distribution Date and any
Class of Group II-A Certificates, the percentage calculated by dividing the
Interest Accrual Amount of such Class (determined without regard to clause (ii)
of the definition thereof) by the Group II-A Interest Accrual Amount (determined
without regard to clause (ii) of the definition of each Interest Accrual
Amount).

            Group II-A Interest Shortfall Amount: As to any Distribution Date
and any Class of Group II-A Certificates, any amount by which the Interest
Accrual Amount of such Class with respect to such Distribution Date exceeds the
amount distributed in respect of such Class on such Distribution Date pursuant
to Paragraph first clause (B) of Section 4.01(a)(i).

            Group II-A Loss Denominator: As to any Determination Date, an amount
equal to the Group II-A Principal Balance.

            Group II-A Loss Percentage: As to any Determination Date and any
Class of Group II-A Certificates, the percentage calculated by dividing the
Principal Balance of such Class by the Group II-A Loss Denominator (determined
without regard to any such Principal Balance of any Class of Group II-A
Certificates not then outstanding), in each case determined as of the preceding
Determination Date.

            Group II-A Optimal Amount: As to any Distribution Date, the sum for
such Distribution Date of (i) the Group II-A Interest Accrual Amount, (ii) the
Aggregate Group II-A Unpaid Interest Shortfall and (iii) the Group II-A Optimal
Principal Amount.

            Group II-A Optimal Principal Amount: As to any Distribution Date, an
amount equal to the sum of (I) the sum, as to each Group II Mortgage Loan that
is an Outstanding Mortgage Loan, of:

            (i) the Group II-A Percentage of the principal portion of the
      Monthly Payment due on the Due Date occurring in the month of such
      Distribution Date on such Mortgage Loan;

            (ii) the Group II-A Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Group II-A Prepayment Percentage of the Scheduled
      Principal Balance of such Mortgage Loan which, during the one month period
      ending on the day preceding the Determination Date for such Distribution
      Date, was repurchased by the Depositor pursuant to Section 2.02, 2.03 or
      3.08; and

            (iv) the Group II-A Percentage of the Substitution Principal Amount
      with respect to each Group II Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

      (II) the Group II-A Prepayment Percentage of the Recovery for Loan Group
      II for such Distribution Date.

            Group II-A Percentage: As to any Distribution Date occurring on or
prior to the Subordination Depletion Date for Group II, the lesser of (i) 100%
and (ii) the percentage obtained by dividing the Group II-A Principal Balance
(determined as of the Determination Date preceding such Distribution Date) by
the Group II Pool Balance. As to any Distribution Date occurring subsequent to
the Subordination Depletion Date for Group II, 100% or such lesser percentage
which will cause the Group II-A Principal Balance to decline to zero following
the distribution made on such Distribution Date.

            Group II-A Prepayment Percentage: As to any Distribution Date to and
including the Distribution Date in October 2013, 100%. As to any Distribution
Date subsequent to October 2013 to and including the Distribution Date in
October 2014, the Group II-A Percentage as of such Distribution Date plus 70% of
the Group II Subordinated Percentage as of such Distribution Date. As to any
Distribution Date subsequent to October 2014 to and including the Distribution
Date in October 2015, the Group II-A Percentage as of such Distribution Date
plus 60% of the Group II Subordinated Percentage as of such Distribution Date.
As to any Distribution Date subsequent to October 2015 to and including the
Distribution Date in October 2016, the Group II-A Percentage as of such
Distribution Date plus 40% of the Group II Subordinated Percentage as of such
Distribution Date. As to any Distribution Date subsequent to October 2016 to and
including the Distribution Date in October 2017, the Group II-A Percentage as of
such Distribution Date plus 20% of the Group II Subordinated Percentage as of
such Distribution Date. As to any Distribution Date subsequent to October 2017,
the Group II-A Percentage as of such Distribution Date.

            No reduction of the level of the Group II-A Prepayment Percentage
shall occur on any Distribution Date unless, as of such Distribution Date, (A)
the average outstanding principal balance on such Distribution Date and for the
preceding five Distribution Dates of the Group II Mortgage Loans that were
delinquent 60 days or more (including for this purpose any Group II Mortgage
Loans in foreclosure and Group II Mortgage Loans with respect to which the
related Mortgaged Property has been acquired by the Trust Estate) does not
exceed 50% of the Group II-B Principal Balance; and (B) cumulative Realized
Losses on the Group II Mortgage Loans do not exceed the following percentages of
the Original Group II-B Subordinated Principal Amount: (1) 30%, if such
Distribution Date occurs between and including November 2013 and October 2014
(2) 35%, if such Distribution Date occurs between and including November 2014
and October 2015, (3) 40%, if such Distribution Date occurs between and
including November 2015 and October 2016, (4) 45%, if such Distribution Date
occurs between and including November 2016 and October 2017, and (5) 50%, if
such Distribution Date occurs during or after November 2017.

            Notwithstanding the foregoing, with respect to any Distribution Date
on which the preceding criteria are not met, the reduction of the Group II-A
Prepayment Percentage described in the second through sixth sentences of this
definition of Group II-A Prepayment Percentage shall not be applicable with
respect to such Distribution Date. In such event, the Group II-A Prepayment
Percentage for such Distribution Date will be determined in accordance with the
applicable provision, as set forth in the first through fifth sentences of this
definition, which was actually used to determine the Group II-A Prepayment
Percentage for the Distribution Date occurring in the October preceding such
Distribution Date (it being understood that for the purposes of the
determination of the Group II-A Prepayment Percentage for the current
Distribution Date, the current Group II-A Percentage and Group II Subordinated
Percentage shall be utilized).

            In addition, if on any Distribution Date, prior to giving effect to
any distributions on such Distribution Date, (i) the Group II Subordinated
Percentage is equal to or greater than twice the Group II Subordinated
Percentage as of the Cut-Off Date, (ii) the average outstanding principal
balance on such Distribution Date and for the preceding five Distribution Dates
of the Group II Mortgage Loans that were delinquent 60 days or more (including
for this purpose any Group II Mortgage Loans in foreclosure and Group II
Mortgage Loans with respect to which the related Mortgaged Property has been
acquired by the Trust Estate) does not exceed 50% of the Group II-B Principal
Balance and (iii)(A) prior to the Distribution Date in November 2009, cumulative
Realized Losses on the Group II Mortgage Loans do not exceed 20% of the Original
Group II-B Subordinated Principal Amount, then the Group II-A Prepayment
Percentage for such Distribution Date will equal the Group II-A Percentage for
such Distribution Date plus 50% of the Group II Subordinated Percentage for such
Distribution Date or (B) on or after the Distribution Date in November 2009,
cumulative Realized Losses on the Group II Mortgage Loans do not exceed 30% of
the Original Group II-B Subordinated Principal Amount, then the Group II-A
Prepayment Percentage for such Distribution Date will equal the Group II-A
Percentage for such Distribution Date.

            Notwithstanding the foregoing, if on any Distribution Date, the
Group II-A Percentage exceeds such percentage as of the Cut-Off Date, then the
Group II-A Prepayment Percentage will equal 100%.

            If on any Distribution Date the allocation to the Group II-A
Certificates of Unscheduled Principal Receipts and other amounts in the
percentage required above would reduce the Group II-A Principal Balance below
zero, the Group II-A Prepayment Percentage for such Distribution Date will be
limited to the percentage necessary to reduce the Group II-A Principal Balance
to zero. In addition, once the Group II-A Principal Balance has been reduced to
zero, the Group II-A Prepayment Percentage will be 0%.

            With respect to any Distribution Date on which the Group II-A
Prepayment Percentage is reduced below the Group II-A Prepayment Percentage for
the prior Distribution Date, the Master Servicer shall certify to the Trustee,
based upon information provided by each Servicer as to the Mortgage Loans
serviced by it that the criteria set forth in this definition are met.

            Group II-A Principal Balance: As of any date, an amount equal to the
sum of the Principal Balances for the Group II-A Certificates.

            Group II-A Principal Distribution Amount: As to any Distribution
Date, the aggregate amount distributed in respect of the Classes of Group II-A
Certificates pursuant to Paragraph third clause (B) of Section 4.01(a)(i).

            Group II-A Shortfall Percentage: As to any Distribution Date and any
Class of Group II-A Certificates, the percentage calculated by dividing the
Class A Unpaid Interest Shortfall for such Class by the Aggregate Group II-A
Unpaid Interest Shortfall, in each case determined as of the day preceding the
applicable Distribution Date.

            Group II-B Certificate: Any one of the Class II-B-1 Certificates,
Class II-B-1-IO Certificates, Class II-B-2 Certificates, Class II-B-2-IO
Certificates, Class II-B-3 Certificates, Class II-B-4 Certificates, Class II-B-5
Certificates or Class II-B-6 Certificates.

            Group II-B Pass-Through Rate: As to any Distribution Date and the
Class II-B-3, Class II-B-4, Class II-B-5 and Class II-B-6 Certificates, the
Group II-B Pass-Through Rate will be a per annum rate equal to Net WAC of the
Group II Mortgage Loans. As to any Distribution Date and the Class II-B-1 and
Class II-B-2 Certificates, the Group II-B Pass-Through Rate will be a per annum
rate equal to Net WAC of the Group II Mortgage Loans minus 0.248602%. As to any
Distribution Date and the Class II-B-1-IO and Class II-B-2-IO Certificates, the
Group II-B Pass-Through Rate will be the Class II-B-1-IO Pass-Through Rate or
Class II-B-2-IO Pass-Through Rate, respectively.

            Group II-B Principal Balance: As of any date, an amount equal to the
sum of the Class II-B-1 Principal Balance, Class II-B-2 Principal Balance, Class
II-B-3 Principal Balance, Class II-B-4 Principal Balance, Class II-B-5 Principal
Balance and Class II-B-6 Principal Balance.

            Holder: See "Certificateholder."

            Independent: When used with respect to any specified Person, such
Person who (i) is in fact independent of the Depositor, the Master Servicer and
any Servicer, (ii) does not have any direct financial interest or any material
indirect financial interest in the Depositor or the Master Servicer or any
Servicer or in an affiliate of either, and (iii) is not connected with the
Depositor, the Master Servicer or any Servicer as an officer, employee,
promoter, underwriter, trustee, partner, director or person performing similar
functions.

            Index: Either the One-Year CMT Index or the One-Year LIBOR Index. In
the event that either such Index is no longer available, the applicable Servicer
will select a substitute Index in accordance with the terms of the related
Mortgage Note and in compliance with federal and state law.

            Insurance Policy: Any insurance or performance bond relating to a
Mortgage Loan or the Mortgage Loans, including any hazard insurance, special
hazard insurance, flood insurance, primary mortgage insurance, mortgagor
bankruptcy bond or title insurance.

            Insurance Proceeds: Proceeds paid by any insurer pursuant to any
Insurance Policy covering a Mortgage Loan.

            Insured Expenses: Expenses covered by any Insurance Policy covering
a Mortgage Loan.

            Interest Accrual Amount: As to any Distribution Date and any Class
of Class A Certificates, (i) the product of (a) 1/12th of the Class A
Pass-Through Rate for such Class and (b) the Principal Balance or Notional
Amount of such Class as of the Determination Date immediately preceding such
Distribution Date minus (ii) the sum of (A) the Group I-A Interest Percentage or
Group II-A Interest Percentage, as applicable, of such Class of the interest
portion of any Realized Losses allocated to the Group I-A Certificates or to the
Group II-A Certificates, as applicable, on or after the Subordination Depletion
Date for such Group pursuant to Section 4.02(c) and (B) the Group I-A Interest
Percentage or Group II-A Interest Percentage, as applicable, of any
Non-Supported Interest Shortfall or Relief Act Shortfall on the Mortgage Loans
in the related Loan Group allocated to the Class A Certificates of such Group
with respect to such Distribution Date.

            As to any Distribution Date and any Class of Class B Certificates of
a Group, an amount equal to (i) the product of 1/12th of the applicable Class B
Pass-Through Rate and the Principal Balance of such Class as of the
Determination Date preceding such Distribution Date minus (ii) the Class B
Interest Percentage of such Class of the sum of any Non-Supported Interest
Shortfall and any Relief Act Shortfall allocated to the Class B Certificates of
such Group with respect to such Distribution Date.

            Interest Only Certificates: Class I-A-IO, Class II-A-IO, Class
I-B-1-IO, Class I-B-2-IO, Class II-B-1-IO and Class II-B-2-IO Certificates.

            Letter of Credit: As defined in the Wells Fargo Bank Servicing
Agreement.

            Liquidated Loan: A Mortgage Loan with respect to which the related
Mortgaged Property has been acquired, liquidated or foreclosed and with respect
to which the applicable Servicer determines that all Liquidation Proceeds which
it expects to recover have been recovered.

            Liquidated Loan Loss: With respect to any Distribution Date, the
aggregate of the amount of losses with respect to each Mortgage Loan which
became a Liquidated Loan during the Applicable Unscheduled Principal Receipt
Period with respect to Full Unscheduled Principal Receipts for such Distribution
Date, equal to the excess of (i) the unpaid principal balance of each such
Liquidated Loan, plus accrued interest thereon in accordance with the
amortization schedule at the time applicable thereto at the applicable Net
Mortgage Interest Rate from the Due Date as to which interest was last paid with
respect thereto through the last day of the month preceding the month in which
such Distribution Date occurs, over (ii) Net Liquidation Proceeds with respect
to such Liquidated Loan.

            Liquidation Expenses: Expenses incurred by a Servicer in connection
with the liquidation of any defaulted Mortgage Loan or property acquired in
respect thereof (including, without limitation, legal fees and expenses,
committee or referee fees, and, if applicable, brokerage commissions and
conveyance taxes), any unreimbursed advances (including Periodic Advances)
expended by such Servicer pursuant to its Servicing Agreement or the Master
Servicer or Trustee pursuant hereto respecting the related Mortgage Loan,
including any unreimbursed advances for real property taxes or for property
restoration or preservation of the related Mortgaged Property. Liquidation
Expenses shall not include any previously incurred expenses in respect of an REO
Mortgage Loan which have been netted against related REO Proceeds.

            Liquidation Proceeds: Amounts received by a Servicer (including
Insurance Proceeds) or PMI Advances made by a Servicer in connection with the
liquidation of defaulted Mortgage Loans or property acquired in respect thereof,
whether through foreclosure, sale or otherwise, including payments in connection
with such Mortgage Loans received from the Mortgagor, other than amounts
required to be paid to the Mortgagor pursuant to the terms of the applicable
Mortgage or to be applied otherwise pursuant to law.

            Liquidation Profits: As to any Distribution Date and any Mortgage
Loan that became a Liquidated Loan during the Applicable Unscheduled Principal
Receipt Period with respect to Full Unscheduled Principal Receipts for such
Distribution Date, the excess, if any, of (i) Net Liquidation Proceeds in
respect of such Liquidated Loan over (ii) the unpaid principal balance of such
Liquidated Loan plus accrued interest thereon in accordance with the
amortization schedule at the time applicable thereto at the applicable Net
Mortgage Interest Rate from the Due Date to which interest was last paid with
respect thereto through the last day of the month preceding the month in which
such Distribution Date occurs.

            Loan Group: Either Loan Group I or Loan Group II.

            Loan Group I: The Group I Mortgage Loans.

            Loan Group II: The Group II Mortgage Loans.

            Loan-to-Value Ratio: The ratio, expressed as a percentage, the
numerator of which is the principal balance of a particular Mortgage Loan at
origination and the denominator of which is the lesser of (x) the appraised
value of the related Mortgaged Property determined in the appraisal used by the
originator at the time of origination of such Mortgage Loan, and (y) if the
Mortgage is originated in connection with a sale of the Mortgaged Property, the
sale price for such Mortgaged Property.

            Lower-Tier Distribution Amount: As defined in Section 4.01(a)(v).

            Lower-Tier REMIC: One of three separate REMICs comprising the Trust
Estate, the assets of which consist of the Mortgage Loans, such amounts as shall
from time to time be held in the Certificate Account, the insurance policies, if
any, relating to a Mortgage Loan and property which secured a Mortgage Loan and
which has been acquired by foreclosure or deed in lieu of foreclosure.

            Master Servicer: Wells Fargo Bank, or its successor in interest.
Initially, the Master Servicer functions shall be performed by the Corporate
Trust Services division of Wells Fargo Bank.

            Master Servicer Errors and Omissions Policy: An insurance policy
covering losses caused by errors or omissions of the Master Servicer and its
personnel.

            Master Servicing Fee: With respect to any Mortgage Loan and any
Distribution Date, the fee payable monthly to the Master Servicer pursuant to
Section 6.05 equal to a fixed percentage (expressed as a per annum rate) of the
unpaid principal balance of such Mortgage Loan.

            Master Servicing Fee Rate: As set forth in Section 11.24.

            Master Servicing Officer: Any officer of the Master Servicer
involved in, or responsible for, the administration and master servicing of the
Mortgage Loans.

            MERS: The Mortgage Electronic Registration Systems, Inc.

            MERS Mortgage Loan: Any MOM Mortgage Loan or any other Mortgage Loan
as to which MERS is (or is intended to be) the mortgagee of record and as to
which a MIN has been assigned.

            Mid-Month Receipt Period: With respect to each Distribution Date,
the one month period beginning on the Determination Date (or, in the case of the
first Distribution Date, from and including the Cut-Off-Date) occurring in the
calendar month preceding the month in which such Distribution Date occurs and
ending on the day preceding the Determination Date immediately preceding such
Distribution Date.

            Middle-Tier Certificate Account: The trust account established and
maintained pursuant to Section 4.01(e).

            Middle-Tier Distribution Amount: As defined in Section 4.01(a)(iv).

            Middle-Tier REMIC: One of the three separate REMICs comprising the
Trust Estate, the assets of which consist of the Uncertificated Lower-Tier
Interests and such amounts as shall from time to time be held in the Middle-Tier
Certificate Account.

            MIN: A MERS Mortgage Identification Number assigned to a Mortgage
Loan registered under MERS.

            MOM: A Mortgage Loan where the related Mortgage names MERS as the
original mortgagee thereof, as to which a MIN has been assigned, and which
Mortgage has not been assigned to any other person.

            Month End Interest: As defined in each Servicing Agreement.

            Monthly Payment: As to any Mortgage Loan (including any REO Mortgage
Loan) and any Due Date, the payment of principal and interest due thereon in
accordance with the amortization schedule at the time applicable thereto (after
adjustment for any Curtailments and Deficient Valuations occurring prior to such
Due Date but before any adjustment to such amortization schedule, other than for
Deficient Valuations, by reason of any bankruptcy or similar proceeding or any
moratorium or similar waiver or grace period).

            Moody's: Moody's Investors Service, Inc. or its successor in
interest.

            Mortgage: The mortgage, deed of trust or other instrument creating a
first lien on Mortgaged Property securing a Mortgage Note together with any
Mortgage Loan Rider, if applicable.

            Mortgage Interest Rate: As to any Mortgage Loan, the per annum rate
at which interest accrues on the unpaid principal balance thereof as set forth
in the related Mortgage Note, which rate is as indicated on the Mortgage Loan
Schedule.

            Mortgage Loan Purchase Agreement: The mortgage loan purchase
agreement dated as of October 24, 2006 between Wells Fargo Bank, as seller, and
the Depositor, as purchaser.

             Mortgage Loan Rider: The standard Fannie Mae/Freddie Mac riders to
the Mortgage Note and/or Mortgage riders required when the Mortgaged Property is
a condominium unit or a unit in a planned unit development.

            Mortgage Loan Schedule: The list delivered by the Depositor to the
Trustee, the Master Servicer and the Custodian of the Mortgage Loans transferred
to the Trustee on the Closing Date as part of the Trust Estate, which list may
be amended following the Closing Date upon conveyance of a Substitute Mortgage
Loan pursuant to Section 2.02 or 2.03 and which list shall set forth at a
minimum the following information as of the close of business on the Cut-Off
Date (or, with respect to Substitute Mortgage Loans, as of the close of business
on the day of substitution) as to each Mortgage Loan:

            (i) the Mortgage Loan identifying number;

            (ii) the city, state and zip code of the Mortgaged Property;

            (iii) the type of property;

            (iv) the Mortgage Interest Rate;

            (v) the Net Mortgage Interest Rate;

            (vi) the Monthly Payment;

            (vii) the original number of months to maturity;

            (viii) the scheduled maturity date;

            (ix) the Cut-Off Date Principal Balance;

            (x) the Loan-to-Value Ratio at origination;

            (xi) whether such Mortgage Loan is a Subsidy Loan;

            (xii) whether such Mortgage Loan is covered by primary mortgage
insurance;

            (xiii) the applicable Servicing Fee Rate;

            (xiv) the Master Servicing Fee Rate; (xv) the applicable Index;

            (xvi) the Gross Margin;

            (xvii) the Periodic Cap;

            (xviii)the first Adjustment Date following the Closing Date;

            (xix) the Rate Ceiling;

            (xx) in the case of any Mortgage Loan initially serviced by Wells
Fargo Bank, whether such Mortgage Loan is a Type 1 Mortgage Loan or a Type 2
Mortgage Loan;

            (xxi) the name of the Servicer; and

            (xxii) whether such Mortgage Loan is a Group I Mortgage Loan or
Group II Mortgage Loan.

            Such schedule may consist of multiple reports that collectively set
forth all of the information required.

            Mortgage Loans: Each of the mortgage loans transferred and assigned
to the Trustee on the Closing Date pursuant to Section 2.01(a) and any mortgage
loans substituted therefor pursuant to Section 2.02 or 2.03, in each case as
from time to time are included in the Trust Estate as identified in the Mortgage
Loan Schedule.

            Mortgage Note: The note or other evidence of indebtedness evidencing
the indebtedness of a Mortgagor under a Mortgage Loan together with any related
Mortgage Loan Riders, if applicable.

            Mortgaged Property: The property subject to a Mortgage, which may
include Co-op Shares or residential long-term leases.

            Mortgagor: The obligor on a Mortgage Note.

            Net Liquidation Proceeds: As to any defaulted Mortgage Loan,
Liquidation Proceeds net of Liquidation Expenses.

            Net Mortgage Interest Rate: With respect to each Mortgage Loan, a
rate equal to (i) the Mortgage Interest Rate on such Mortgage Loan minus (ii)
the sum of (a) the applicable Servicing Fee Rate, as set forth in Section 11.23
with respect to such Mortgage Loan and (b) the Master Servicing Fee Rate, as set
forth in Section 11.24 with respect to such Mortgage Loan. Any regular monthly
computation of interest at such rate shall be based upon annual interest at such
rate on the applicable amount divided by twelve.

            Net REO Proceeds: As to any REO Mortgage Loan, REO Proceeds net of
any related expenses of the Servicer.

            Net WAC: As to either Loan Group and any Distribution Date, a per
annum rate equal to the weighted average of the Net Mortgage Interest Rates of
the Mortgage Loans in such Loan Group (based on the Scheduled Principal Balances
of the Mortgage Loans in such Loan Group on the first day of the month preceding
the month in which such Distribution Date occurs).

            Non-permitted Foreign Holder: As defined in Section 5.02(d).

            Nonrecoverable Advance: Any portion of a Periodic Advance previously
made or proposed to be made in respect of a Mortgage Loan which has not been
previously reimbursed to the Servicer, the Master Servicer or the Trustee, as
the case may be, and which the Servicer, the Master Servicer or the Trustee
determines will not, or in the case of a proposed Periodic Advance would not, be
ultimately recoverable from Liquidation Proceeds or other recoveries in respect
of the related Mortgage Loan. The determination by the Servicer, the Master
Servicer or the Trustee (i) that it has made a Nonrecoverable Advance or (ii)
that any proposed Periodic Advance, if made, would constitute a Nonrecoverable
Advance, shall be evidenced by an Officer's Certificate of the Servicer
delivered to the Master Servicer for redelivery to the Trustee or, in the case
of a Master Servicer determination, an Officer's Certificate of the Master
Servicer delivered to the Trustee, in each case detailing the reasons for such
determination.

            Non-Supported Interest Shortfall: With respect to any Distribution
Date and either Loan Group, the sum of (i) the excess, if any, of the aggregate
Prepayment Interest Shortfall on the Mortgage Loans of such Loan Group over the
aggregate Compensating Interest with respect to the related Group for such
Distribution Date and (ii) Curtailment Interest Shortfalls with respect to such
Loan Group for such Distribution Date. With respect to each Distribution Date
occurring on or after the Subordination Depletion Date for Group I or Group II,
as the case may be, the Non-Supported Interest Shortfall for the related Loan
Group determined pursuant to the preceding sentence will be increased by the
amount of any Subordination Depletion Date Interest Shortfall with respect to
such Loan Group for such Distribution Date. Any Non-Supported Interest Shortfall
for Loan Group I or Loan Group II will be allocated to (a) (i) the Group I-A
Certificates according to the percentage obtained by dividing the Group I-A
Principal Balance by the Group I Aggregate Principal Balance or (ii) Group II-A
Certificates according to the percentage obtained by dividing the Group II-A
Principal Balance by the Group II Aggregate Principal Balance and (b) (i) the
Group I-B Certificates according to the percentage obtained by dividing the
Group I-B Principal Balance by the Group II Aggregate Principal Balance or (ii)
the Group II-B Certificates according to the percentage obtained by dividing the
Group II-B Principal Balance by the Group II Aggregate Principal Balance.

            Non-U.S. Person: As defined in Section 4.01(g).

            Notional Amount: Any of the Class I-A-IO Notional Amount, Class
II-A-IO Notional Amount, Class I-B-1-IO Notional Amount, Class I-B-2-IO Notional
Amount, Class II-B-1-IO Notional Amount or the Class II-B-2-IO Notional Amount.

            NYCEMA: A New York Consolidation, Extension and Modification
Agreement.

            Officer's Certificate: With respect to any Person, a certificate
signed by the Chairman of the Board, the President or a Vice President, and by
the Treasurer, the Secretary or one of the Assistant Treasurers, Assistant
Secretaries or any other duly authorized officer of such Person (or, in the case
of a Person which is not a corporation, signed by the person or persons having
like responsibilities).

            One-Year CMT Index: As to any Mortgage Loan and Adjustment Date, a
rate per annum that is defined to be the weekly average yield on United States
Treasury Securities adjusted to a constant maturity of one year, as made
available by the Federal Reserve Board, published in Federal Reserve Statistical
Release H.15 (519) and most recently available as of the date up to 45 days
before the applicable Adjustment Date. In the event that such Index is no longer
available, the applicable Servicer will select a substitute Index in accordance
with the terms of the related Mortgage Note and in compliance with federal and
state law.

            One-Year LIBOR Index: As to any Mortgage Loan and Adjustment Date, a
rate per annum that is defined to be the average of interbank offered rates for
one-year U.S. dollar-denominated deposits in the London market, as published in
The Wall Street Journal and most recently available as of the date up to 45 days
before the applicable Adjustment Date.

            Opinion of Counsel: A written opinion of counsel, who may be outside
or salaried counsel for the Depositor, a Servicer or the Master Servicer, or any
affiliate of the Depositor, a Servicer or the Master Servicer, acceptable to the
Trustee if such opinion is to be delivered to the Trustee; provided, however,
that with respect to REMIC matters, matters relating to the determination of
Eligible Accounts or matters relating to transfers of Certificates, such counsel
shall be Independent.

            Optimal Adjustment Event: With respect to any Class of Class B
Certificates of a Group and any Distribution Date, an Optimal Adjustment Event
will occur with respect to such Class if: (i) the Principal Balance of such
Class on the Determination Date succeeding such Distribution Date would have
been reduced to zero (regardless of whether such Principal Balance was reduced
to zero as a result of principal distribution or the allocation of Realized
Losses to such Group) and (ii) (a) the Principal Balance of any Class of Class A
Certificates of such Group would be subject to further reduction as a result of
the third sentence of the definition of Principal Balance or (b) the Principal
Balance of a Class of Class B Certificates of such Group with a lower numerical
designation would be reduced with respect to such Distribution Date as a result
of the application of the proviso in the definition of Class I-B-1 Principal
Balance, Class I-B-2 Principal Balance, Class I-B-3 Principal Balance, Class
I-B-4 Principal Balance, Class I-B-5 Principal Balance, Class I-B-6 Principal
Balance, Class II-B-1 Principal Balance, Class II-B-2 Principal Balance, Class
II-B-3 Principal Balance, Class II-B-4 Principal Balance, Class II-B-5 Principal
Balance or Class II-B-6 Principal Balance.

            Original Class I-A-IO Notional Amount: The Original Class I-A-IO
Notional Amount as set forth in Section 11.05(a).

            Original Class II-A-IO Notional Amount: The Original Class II-A-IO
Notional Amount as set forth in Section 11.05(b).

            Original Class I-B-1 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class I-B-2 Principal Balance, the Original Class I-B-3 Principal Balance, the
Original Class I-B-4 Principal Balance, the Original Class I-B-5 Principal
Balance and the Original Class I-B-6 Principal Balance by the Cut-Off Date Group
I Aggregate Principal Balance. The Original Class I-B-1 Fractional Interest is
specified in Section 11.10.

            Original Class I-B-2 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class I-B-3 Principal Balance, the Original Class I-B-4 Principal Balance, the
Original Class I-B-5 Principal Balance and the Original Class I-B-6 Principal
Balance by the Cut-Off Date Group I Aggregate Principal Balance. The Original
Class I-B-2 Fractional Interest is specified in Section 11.11.

            Original Class I-B-3 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class I-B-4 Principal Balance, the Original Class I-B-5 Principal Balance and
the Original Class I-B-6 Principal Balance by the Cut-Off Date Group I Aggregate
Principal Balance. The Original Class I-B-3 Fractional Interest is specified in
Section 11.12.

            Original Class I-B-4 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class I-B-5 Principal Balance and the Original Class I-B-6 Principal Balance by
the Cut-Off Date Group I Aggregate Principal Balance. The Original Class I-B-4
Fractional Interest is specified in Section 11.13.

            Original Class I-B-5 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the Original Class I-B-6
Principal Balance by the Cut-Off Date Group I Aggregate Principal Balance. The
Original Class I-B-5 Fractional Interest is specified in Section 11.14.

            Original Class I-B-1-IO Notional Amount: The Original Class I-B-1-IO
Notional Amount as set forth in Section 11.09(a).

            Original Class I-B-2-IO Notional Amount: The Original Class I-B-2-IO
Notional Amount as set forth in Section 11.09(b).

            Original Class I-B-1 Principal Balance: The Class I-B-1 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class I-B-2 Principal Balance: The Class I-B-2 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class I-B-3 Principal Balance: The Class I-B-3 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class I-B-4 Principal Balance: The Class I-B-4 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08. Original Class
I-B-5 Principal Balance: The Class I-B-5 Principal Balance as of the Cut-Off
Date, as set forth in Section 11.08.

            Original Class I-B-6 Principal Balance: The Class I-B-6 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class II-B-1 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class II-B-2 Principal Balance, the Original Class II-B-3 Principal Balance, the
Original Class II-B-4 Principal Balance, the Original Class II-B-5 Principal
Balance and the Original Class II-B-6 Principal Balance by the Cut-Off Date
Group II Aggregate Principal Balance. The Original Class II-B-1 Fractional
Interest is specified in Section 11.15.

            Original Class II-B-2 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class II-B-3 Principal Balance, the Original Class II-B-4 Principal Balance, the
Original Class II-B-5 Principal Balance and the Original Class II-B-6 Principal
Balance by the Cut-Off Date Group II Aggregate Principal Balance. The Original
Class II-B-2 Fractional Interest is specified in Section 11.16.

            Original Class II-B-3 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class II-B-4 Principal Balance, the Original Class II-B-5 Principal Balance and
the Original Class II-B-6 Principal Balance by the Cut-Off Date Group II
Aggregate Principal Balance. The Original Class II-B-3 Fractional Interest is
specified in Section 11.17.

            Original Class II-B-4 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the sum of the Original
Class II-B-5 Principal Balance and the Original Class II-B-6 Principal Balance
by the Cut-Off Date Group II Aggregate Principal Balance. The Original Class
II-B-4 Fractional Interest is specified in Section 11.18.

            Original Class II-B-5 Fractional Interest: As to the first
Distribution Date, the percentage obtained by dividing the Original Class II-B-6
Principal Balance by the Cut-Off Date Group II Aggregate Principal Balance. The
Original Class II-B-5 Fractional Interest is specified in Section 11.19.

            Original Class II-B-1-IO Notional Amount: The Original Class
II-B-1-IO Notional Amount as set forth in Section 11.09(c).

            Original Class II-B-2-IO Notional Amount: The Original Class
II-B-2-IO Notional Amount as set forth in Section 11.09(d).

            Original Class II-B-1 Principal Balance: The Class II-B-1 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class II-B-2 Principal Balance: The Class II-B-2 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class II-B-3 Principal Balance: The Class II-B-3 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class II-B-4 Principal Balance: The Class II-B-4 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

             Original Class II-B-5 Principal Balance: The Class II-B-5 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class II-B-6 Principal Balance: The Class II-B-6 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.08.

            Original Class B Principal Balance: The sum of the Original Class
I-B-1 Principal Balance, Original Class I-B-2 Principal Balance, Original Class
I-B-3 Principal Balance, Original Class I-B-4 Principal Balance, Original Class
I-B-5 Principal Balance, Original Class I-B-6 Principal Balance, Original Class
II-B-1 Principal Balance, Original Class II-B-2 Principal Balance, Original
Class II-B-3 Principal Balance, Original Class II-B-4 Principal Balance,
Original Class II-B-5 Principal Balance and Original Class II-B-6 Principal
Balance, as set forth in Section 11.07.

            Original Group I-A Percentage: The Group I-A Percentage as of the
Cut-Off Date as set forth in Section 11.03 (a).

            Original Group I-B Principal Balance: The Group I-B Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07(a).

            Original Group I-B Subordinated Principal Amount: The Group I-B
Principal Balance as of the Cut-Off Date.

            Original Group II-A Percentage: The Group II-A Percentage as of the
Cut-Off Date as set forth in Section 11.03(b).

            Original Group II-B Principal Balance: The Group II-B Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07(b).

            Original Group II-B Subordinated Principal Amount: The Group II-B
Principal Balance as of the Cut-Off Date.

            Original Notional Amount: Any of the Original Class I-A-IO Notional
Amount, Original Class II-A-IO Notional Amount, Original Class I-B-1-IO Notional
Amount, Original Class I-B-2-IO Notional Amount, Original Class II-B-1-IO
Notional Amount or Original Class II-B-2-IO Notional Amount.

            Original Principal Balance: Any of the Original Principal Balances
of the Classes of Class A Certificates as set forth in Section 11.04; the
Original Class I-B-1 Principal Balance, Original Class I-B-2 Principal Balance,
Original Class I-B-3 Principal Balance, Original Class I-B-4 Principal Balance,
Original Class I-B-5 Principal Balance, Original Class I-B-6 Principal Balance,
Original Class II-B-1 Principal Balance, Original Class II-B-2 Principal
Balance, Original Class II-B-3 Principal Balance, Original Class II-B-4
Principal Balance, Original Class II-B-5 Principal Balance or Original Class
II-B-6 Principal Balance as set forth in Section 11.08.

            Other Servicer: Any of the Servicers other than Wells Fargo Bank.

            Other Servicer Mortgage Loan: Any of the Mortgage Loans, if any,
identified on the Mortgage Loan Schedule as serviced by an Other Servicer, as
such Mortgage Loan Schedule may be amended from time to time in connection with
a substitution pursuant to Section 2.02 or 2.03, which Mortgage Loan is serviced
under an Other Servicing Agreement.

            Other Servicing Agreements: The Servicing Agreements other than the
Wells Fargo Bank Servicing Agreement.

            Outstanding Mortgage Loan: As to any Due Date, a Mortgage Loan
(including an REO Mortgage Loan) which was not the subject of a Full Unscheduled
Principal Receipt prior to such Due Date and which was not repurchased by the
Depositor prior to such Due Date pursuant to Section 2.02, 2.03 or 3.08.

            Owner Mortgage Loan File: A file maintained by the Custodian for
each Mortgage Loan that contains the documents specified in Section 2.01(a) and
any additional documents required to be added to the Owner Mortgage Loan File
pursuant to this Agreement.

            Partial Liquidation Proceeds: Liquidation Proceeds received by a
Servicer prior to the Unscheduled Principal Receipt Period in which the related
Mortgage Loan became a Liquidated Loan.

            Partial Unscheduled Principal Receipt: An Unscheduled Principal
Receipt which is not a Full Unscheduled Principal Receipt.

            Paying Agent: The Person authorized to make distributions to
Certificateholders with respect to the Certificates and to forward to
Certificateholders the periodic and annual statements required by Section 4.04.
The Paying Agent may be the Trustee. The initial Paying Agent is appointed in
Section 4.03(b).

            Paying Agent Agreement: As defined in Section 4.03(b).

            Payment Account: The account maintained pursuant to Section 4.03(a).

            Percentage Interest: With respect to a Class A Certificate of a
Class (other than the Senior Interest Only Certificates), the undivided
percentage interest obtained by dividing the original principal balance of such
Certificate by the Original Principal Balance of such Class of Class A
Certificates. With respect to the Senior Interest Only Certificates, the
undivided percentage interest obtained by dividing the original notional amount
evidenced by such Certificate by the Original Notional Amount of such Class of
Certificates. With respect to a Class B Certificate of a Class (other than the
Subordinate Interest Only Certificates), the undivided percentage interest
obtained by dividing the original principal balance of such Certificate by the
Original Principal Balance of such Class of Class B Certificates. With respect
to the Subordinate Interest Only Certificates, the undivided percentage interest
obtained by dividing the original notional amount evidenced by such Certificate
by the Original Notional Amount of such Class of Certificates.

            Periodic Advance: The aggregate of the advances required to be made
by a Servicer on any Remittance Date pursuant to its Servicing Agreement or by
the Master Servicer or the Trustee hereunder on any Distribution Date, the
amount of any such advances being equal to the total of all Monthly Payments
(adjusted, in each case (i) in respect of interest, to the applicable Mortgage
Interest Rate less the applicable Servicing Fee in the case of Periodic Advances
made by a Servicer and to the applicable Net Mortgage Interest Rate in the case
of Periodic Advances made by the Master Servicer or Trustee and (ii) by the
amount of any related Debt Service Reductions or reductions in the amount of
interest collectable from the Mortgagor pursuant to the Servicemembers Civil
Relief Act, as it may be amended from time to time, or similar legislation or
regulations then in effect) on the Mortgage Loans, that (x) were delinquent as
of the close of business on the related Determination Date, (y) were not the
subject of a previous Periodic Advance by such Servicer or of a Periodic Advance
by the Master Servicer or the Trustee, as the case may be and (z) have not been
determined by the Master Servicer, such Servicer or Trustee to be Nonrecoverable
Advances.

            Periodic Cap: For each Mortgage Loan, the applicable limit on
adjustment of the Mortgage Interest Rate for each Adjustment Date specified in
the applicable Mortgage Note and designated as such in the Mortgage Loan
Schedule.

            Person: Any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

            Plan: As defined in Section 5.02(c).

            Pledge Holder: As defined in the Wells Fargo Bank Servicing
Agreement.

            Pledged Asset Mortgage Loans: The Mortgage Loans listed on Exhibit Q
for which Letters of Credit have been issued.

            PMI Advance: As defined in the related Servicing Agreement, if
applicable.

             Pool Balance: Either of the Group I Pool Balance or Group II Pool
Balance.

            Prepayment In Full: With respect to any Mortgage Loan, a Mortgagor
payment consisting of a Principal Prepayment in the amount of the outstanding
principal balance of such loan and resulting in the full satisfaction of such
obligation.

            Prepayment Interest Shortfall: On any Distribution Date, the amount
of interest, if any, that would have accrued on any Mortgage Loan which was the
subject of a Prepayment in Full at the Net Mortgage Interest Rate for such
Mortgage Loan from the date of its Prepayment in Full (but in the case of a
Prepayment in Full where the Applicable Unscheduled Principal Receipt Period is
the Mid-Month Receipt Period, only if the date of the Prepayment in Full is on
or after the Determination Date in the month prior to the month of such
Distribution Date and prior to the first day of the month of such Distribution
Date) through the last day of the month prior to the month of such Distribution
Date.

            Principal Adjustment: In the event that the Class I-B-1 Optimal
Principal Amount, Class I-B-2 Optimal Principal Amount, Class I-B-3 Optimal
Principal Amount, Class I-B-4 Optimal Principal Amount, Class I-B-5 Optimal
Principal Amount, Class I-B-6 Optimal Principal Amount, Class II-B-1 Optimal
Principal Amount, Class II-B-2 Optimal Principal Amount, Class II-B-3 Optimal
Principal Amount, Class II-B-4 Optimal Principal Amount, Class II-B-5 Optimal
Principal Amount or Class II-B-6 Optimal Principal Amount is calculated in
accordance with the proviso in such definition with respect to any Distribution
Date, the Principal Adjustment for such Class of Class B Certificates shall
equal the difference between (i) the amount that would have been distributed to
such Class as principal in accordance with Section 4.01(a)(ii) for such
Distribution Date, calculated without regard to such proviso and assuming there
are no Principal Adjustments for such Distribution Date and (ii) the Adjusted
Principal Balance for such Class.

            Principal Balance: As of the first Determination Date and as to any
Class of Class A Certificates (other than the Senior Interest Only
Certificates), the Original Principal Balance of such Class. As of any
subsequent Determination Date prior to the applicable Subordination Depletion
Date and as to any Class of Group I-A Certificates or Group II-A Certificates,
as the case may be (other than the Senior Interest Only Certificates), the
Original Principal Balance of such Class less the sum of all amounts previously
distributed in respect of such Class on prior Distribution Dates (i) pursuant to
Paragraph third of Section 4.01(a)(i) and (ii) as a result of a Principal
Adjustment. After the applicable Subordination Depletion Date, each such
Principal Balance of a Class of Group I-A Certificates or Group II-A
Certificates, as the case may be, will also be reduced (if clause (a) is greater
than clause (b)) or increased (if clause (a) is less than clause (b)) on each
Determination Date by an amount equal to the product of the Group I-A Loss
Percentage or Group II-A Loss Percentage, as applicable, of such Class and the
difference, if any, between (a) the Group I-A Principal Balance or Group II-A
Principal Balance, as applicable, as of such Determination Date without regard
to this sentence and (b) the Group I Adjusted Pool Amount or Group II Adjusted
Pool Amount, as applicable, for the preceding Distribution Date; provided,
however, that the amount of any such reduction for the Class I-A-1 Certificates
will be decreased by the Class I-A-2 Loss Allocation Amount and the amount of
any such reduction for the Class II-A-1 Certificates will be decreased by the
Class II-A-2 Loss Allocation Amount. After the applicable Subordination
Depletion Date, the Principal Balance of the Class I-A-2 Certificates will
additionally be reduced by the Class I-A-2 Loss Allocation Amount and the
Principal Balance of the Class II-A-2 Certificates will additionally be reduced
by the Class II-A-2 Loss Allocation Amount. In addition, any increase allocated
to the Class I-A-1 Certificates pursuant to the third sentence above will
instead increase the Principal Balance of the Class I-A-2 Certificates and any
increase allocated to the Class II-A-1 Certificates pursuant to the third
sentence above will instead increase the Principal Balance of the Class II-A-2
Certificates.

            The Class I-A-IO and Class II-A-IO Certificates are Senior Interest
Only Certificates and have no Principal Balance.

            As to the Class B Certificates, the Class I-B-1 Principal Balance,
Class I-B-2 Principal Balance, Class I-B-3 Principal Balance, Class I-B-4
Principal Balance, Class I-B-5 Principal Balance, Class I-B-6 Principal Balance,
the Class II-B-1 Principal Balance, Class II-B-2 Principal Balance, Class II-B-3
Principal Balance, Class II-B-4 Principal Balance, Class II-B-5 Principal
Balance and Class II-B-6 Principal Balance, respectively.

            The Class I-B-1-IO, Class I-B-2-IO, Class II-B-1-IO and Class
II-B-2-IO Certificates are Subordinate Interest Only Certificates and have no
Principal Balance.

            Notwithstanding the foregoing, no Principal Balance of a Class will
be increased on any Determination Date such that the Principal Balance of such
Class exceeds its Original Principal Balance less all amounts previously
distributed in respect of such Class on prior Distribution Dates pursuant to
Paragraph third clauses (A) or (B) of Section 4.01(a)(i) or Paragraphs third,
sixth, ninth, twelfth, fifteenth or eighteenth of Section 4.01(a)(ii).

            Principal Prepayment: Any Mortgagor payment on a Mortgage Loan which
is received in advance of its Due Date and is not accompanied by an amount
representing scheduled interest for any period subsequent to the date of
prepayment.

            Prior Month Receipt Period: With respect to each Distribution Date,
the calendar month preceding the month in which such Distribution Date occurs.

            Prohibited Transaction Tax: Any tax imposed under Section 860F of
the Code.

            Prospectus: The prospectus dated October 23, 2006 as supplemented by
the prospectus supplement dated October 23, 2006, relating to the Class A, Class
I-B-1, Class I-B-1-IO, Class I-B-2, Class I-B-2-IO, Class I-B-3, Class II-B-1,
Class II-B-1-IO, Class II-B-2, Class II-B-2-IO and Class II-B-3 Certificates.

            Prudent Servicing Practices: The standard of care set forth in each
Servicing Agreement.

            Rate Ceiling: The maximum per annum Mortgage Interest Rate permitted
under the related Mortgage Note.

            Rating Agency: Any nationally recognized statistical credit rating
agency, or its successor, that rated one or more Classes of the Certificates at
the request of the Depositor at the time of the initial issuance of the
Certificates. The Rating Agencies for the Class A Certificates (other than the
Class I-A-R Certificate) are Fitch and Moody's. The Rating Agency for the Class
I-A-R, Class I-B-1, Class I-B-1-IO, Class I-B-2, Class I-B-2-IO, Class I-B-3,
Class I-B-4, Class I-B-5, Class II-B-1, Class II-B-1-IO, Class II-B-2, Class
II-B-2-IO, Class II-B-3, Class II-B-4 and Class II-B-5 Certificates is Fitch. If
either such agency or a successor is no longer in existence, "Rating Agency"
shall be such statistical credit rating agency, or other comparable Person,
designated by the Depositor, notice of which designation shall be given to the
Trustee and the Master Servicer. References herein to the highest short-term
rating category of a Rating Agency shall mean F-1+ in the case of Fitch and P-1
in the case of Moody's and in the case of any other Rating Agency shall mean its
equivalent of such ratings. References herein to the highest long-term rating
categories of a Rating Agency shall mean Aaa in the case of Moody's and AAA in
the case of Fitch, and in the case of any other Rating Agency shall mean its
equivalent of such ratings without any plus or minus.

            Realized Losses: With respect to any Distribution Date, (i)
Liquidated Loan Losses incurred on Liquidated Loans for which the Liquidation
Proceeds were received during the Applicable Unscheduled Principal Receipt
Period with respect to Full Unscheduled Principal Receipts with respect to such
Distribution Date and (ii) Bankruptcy Losses incurred during the period
corresponding to the Applicable Unscheduled Principal Receipt Period with
respect to Full Unscheduled Principal Receipts for such Distribution Date.

            Record Date: The last Business Day of the month preceding the month
of the related Distribution Date.

            Recovery: As to any Distribution Date and each Loan Group, the sum
of all amounts received (net of any reimbursable expenses) for the Group I
Mortgage Loans or Group II Mortgage Loans, as applicable, subsequent to any such
Mortgage Loan being determined to be a Liquidated Loan.

            Regulation AB: Subpart 229.1100--Asset Backed Securities (Regulation
AB), 17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from time to
time, and subject to such clarification and interpretation as have been publicly
provided by the Commission in the adopting release (Asset-Backed Securities,
Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506, 1,531 (Jan. 7, 2005)) or
by the staff of the Commission, or as may be provided by the Commission or its
staff from time to time.

            Reimbursement Amount: As defined in Section 2.03(c).

            Relevant Servicing Criteria: The Servicing Criteria applicable to
the Master Servicer, the Trustee, the Custodian or the Servicers, as set forth
on Exhibit R attached hereto and the Servicing Criteria applicable to any
Special Servicer as set forth in the applicable Special Servicing Agreement. For
clarification purposes, multiple parties can have responsibility for the same
Relevant Servicing Criteria. With respect to a Servicing Function Participant
engaged by the Master Servicer, the Trustee, the Custodian, the Special Servicer
(if applicable) or a Servicer, the term "Relevant Servicing Criteria" refers to
the portion of the Relevant Servicing Criteria applicable to the party engaging
such Servicing Function Participant insofar as the functions required to be
performed by such party are to be performed by the Servicing Function
Participant.

            Relief Act Shortfall: With respect to any Distribution Date and
either Loan Group, any interest shortfalls arising as a result of the reduction
in the amount of monthly interest payments on any Mortgage Loans of such Loan
Group as a result of the application of the Servicemembers Civil Relief Act, as
it may be amended from time to time, or comparable state legislation. Any Relief
Act Shortfall for Loan Group I or Loan Group II will be allocated to (a) (i) the
Group I-A Certificates according to the percentage obtained by dividing the
Group I-A Principal Balance by the Group I Aggregate Principal Balance or (ii)
the Group II-A Certificates according to the percentage obtained by dividing the
Group II-A Principal Balance by the Group II Aggregate Principal Balance and (b)
(i) the Group I-B Certificates according to the percentage obtained by dividing
the Group I-B Principal Balance by the Group I Aggregate Principal Balance or
(ii) the Group II-B Certificates according to the percentage obtained by
dividing the Group II-B Principal Balance by the Group II Aggregate Principal
Balance.

            REMIC: A "real estate mortgage investment conduit" as defined in
Code Section 860D.

            REMIC Provisions: Provisions of the federal income tax law relating
to REMICs, which appear at Sections 860A through 860G of Part IV of Subchapter M
of Chapter 1 of Subtitle A of the Code, and related provisions, and U.S.
Department of the Treasury temporary, proposed or final regulations promulgated
thereunder, as the foregoing are in effect (or with respect to proposed
regulations, are proposed to be in effect) from time to time.

            Remittance Date: As defined in each of the Servicing Agreements.

            REO Mortgage Loan: Any Mortgage Loan which is not a Liquidated Loan
and as to which the indebtedness evidenced by the related Mortgage Note is
discharged and the related Mortgaged Property is held as part of the Trust
Estate.

            REO Proceeds: Proceeds received in respect of any REO Mortgage Loan
(including, without limitation, proceeds from the rental of the related
Mortgaged Property).

            Reportable Event: As defined in Section 3.12(c).

            Repurchase Price: With respect to any Mortgage Loan repurchased
pursuant to Section 2.02, 2.03 or 3.08 hereof, the sum of (a) 100% of the unpaid
principal balance of such Mortgage Loan plus (b) accrued interest at the
Mortgage Interest Rate through the last day of the month in which such
repurchase takes place.

            Request for Release: A request for release (which may be in
electronic form) in substantially the form attached as Exhibit G hereto.

            Residual Certificate: The Class I-A-R Certificate.

            Responsible Officer: When used with respect to the Trustee, the
Master Servicer, the Custodian, the Paying Agent or the Authenticating Agent,
any officer of the Corporate Trust Department of the Trustee, the Master
Servicer, the Custodian, the Paying Agent or the Authenticating Agent having
direct responsibility for the administration of this Agreement, including any
Senior Vice President, any Vice President, any Assistant Vice President, any
Assistant Secretary, any Trust Officer or Assistant Trust Officer, or any other
employee of the Trustee, the Master Servicer, the Custodian, the Paying Agent or
the Authenticating Agent customarily performing functions similar to those
performed by any of the above-designated officers. When used with respect to a
Servicer, a Servicing Officer.

            Retained Mortgage Loan File: A file maintained by Wells Fargo Bank
prior to any Document Transfer Date for each Mortgage Loan that contains the
documents specified in Section 2.01(b) and any additional documents required to
be added to the Retained Mortgage Loan File pursuant to this Agreement.

            Rule 144A: Rule 144A promulgated under the 1933 Act.

            S&P: Standard & Poor's, a division of The McGraw-Hill Companies,
Inc., or its successor in interest.

            Sarbanes-Oxley Certification: As defined in Section 3.12(b).

            Scheduled Principal Balance: As to any Mortgage Loan and
Distribution Date, the principal balance of such Mortgage Loan as of the Due
Date in the month preceding the month of such Distribution Date as specified in
the amortization schedule at the time relating thereto (before any adjustment to
such amortization schedule by reason of any bankruptcy (other than Deficient
Valuations) or similar proceeding or any moratorium or similar waiver or grace
period) after giving effect to (A) Unscheduled Principal Receipts received or
applied by the applicable Servicer during the related Unscheduled Principal
Receipt Period for each applicable type of Unscheduled Principal Receipt related
to the Distribution Date occurring in the month preceding such Distribution
Date, (B) Deficient Valuations incurred prior to such Due Date and (C) the
payment of principal due on such Due Date and irrespective of any delinquency in
payment by the related Mortgagor. Accordingly, the Scheduled Principal Balance
of a Mortgage Loan which becomes a Liquidated Loan at any time through the last
day of such related Unscheduled Principal Receipt Period shall be zero.

            Senior Interest Only Certificates: Class I-A-IO and Class II-A-IO
Certificates.

            Servicer Mortgage Loan File: As defined in each of the Servicing
Agreements.

            Servicers: Wells Fargo Bank, as a Servicer under the related
Servicing Agreement. Initially the servicing functions performed by Wells Fargo
Bank shall be performed by the Wells Fargo Home Mortgage division of Wells Fargo
Bank.

            Servicing Agreements: Each of the Servicing Agreements executed with
respect to a portion of the Mortgage Loans by one of the Servicers, which
agreements are attached hereto, collectively, as Exhibit L.

            Servicing Criteria: The "servicing criteria" set forth in Item
1122(d) of Regulation AB, as such may be amended from time to time.

            Servicing Fee: With respect to any Servicer, as defined in its
Servicing Agreement.

            Servicing Fee Rate: With respect to a Mortgage Loan, as set forth in
Section 11.23.

            Servicing Function Participant: Any Subservicer, Subcontractor or
any other Person, other than the Master Servicer, the Trustee, the Custodian,
the Special Servicer (if applicable) and the Servicers, that is performing
activities addressed by the Servicing Criteria.

            Servicing Officer: Any officer of a Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans.

            Similar Law: As defined in Section 5.02(c).

            Special Servicer: As defined in Section 3.08.

            Special Servicing Agreement: As defined in Section 3.08.

            Single Certificate: A Certificate of any Class that evidences the
smallest permissible Denomination for such Class, as set forth in Section 11.22.

            Startup Day: As defined in Section 2.05.

            Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing of Mortgage Loans but performs one or more
discrete functions identified in Item 1122(d) of Regulation AB with respect to
Mortgage Loans under the direction or authority of any Servicer (or a
Subservicer of any Servicer), the Master Servicer, the Trustee or the Custodian.

            Subordinate Interest Only Certificates: Class I-B-1-IO, Class
I-B-2-IO, Class II-B-1-IO and Class II-B-2-IO Certificates.

            Subordination Depletion Date: With respect to a Group, the
Distribution Date preceding the first Distribution Date on which the Group I-A
Percentage or Group II-A Percentage, as applicable, (in each case, determined
pursuant to clause (ii) of the definition thereof) equals or exceeds 100%.

            Subordination Depletion Date Interest Shortfall: With respect to
either Loan Group and any Distribution Date that occurs on or after the
applicable Subordination Depletion Date with respect to any Unscheduled
Principal Receipt (other than a Prepayment in Full or Curtailment) with respect
to such Loan Group:

            (A)    in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Mid-Month Receipt Period and such Unscheduled
                  Principal Receipt is received by the Servicer on or after the
                   Determination Date in the month preceding the month of such
                  Distribution Date but prior to the first day of the month of
                  such Distribution Date, the amount of interest that would have
                  accrued at the Net Mortgage Interest Rate on the amount of
                  such Unscheduled Principal Receipt from the day of its receipt
                  or, if earlier, its application by the Servicer through the
                  last day of the month preceding the month of such Distribution
                  Date; and

            (B)    in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Prior Month Receipt Period and such Unscheduled
                  Principal Receipt is received by the Servicer during the month
                  preceding the month of such Distribution Date, the amount of
                  interest that would have accrued at the Net Mortgage Interest
                  Rate on the amount of such Unscheduled Principal Receipt from
                  the day of its receipt or, if earlier, its application by the
                  Servicer through the last day of the month in which such
                  Unscheduled Principal Receipt is received.

            Subservicer: Any Person that (i) services Mortgage Loans on behalf
of any Servicer, and (ii) is responsible for the performance (whether directly
or through Subservicers or Subcontractors) of a substantial portion of the
material servicing functions required to be performed under this Agreement, any
related Servicing Agreement or any sub-servicing agreement that are identified
in Item 1122(d) of Regulation AB.

            Subsidy Account: If the Trust Estate contains any Subsidy Loans, the
deposit account or accounts created and maintained by the Servicer for deposit
of Subsidy Funds and amounts payable under interest subsidy agreements relating
to mortgage loans other than the Mortgage Loans.

            Subsidy Funds: If the Trust Estate contains any Subsidy Loans, funds
contributed by the employer of a Mortgagor in order to reduce the payments
required from the Mortgagor for a specified period in specified amounts.

            Subsidy Loan: Any Mortgage Loan subject to a temporary interest
subsidy agreement pursuant to which the monthly interest payments made by the
related Mortgagor will be less than the scheduled monthly interest payments on
such Mortgage Loan, with the resulting difference in interest payments being
provided by the employer of the Mortgagor.

            Substitute Mortgage Loan: As defined in Section 2.02.

            Substitution Principal Amount: With respect to any Mortgage Loan
substituted in accordance with Section 2.02 or pursuant to Section 2.03, the
excess of (x) the unpaid principal balance of the Mortgage Loan which is
substituted for over (y) the unpaid principal balance of the Substitute Mortgage
Loan, each balance being determined as of the date of substitution.

            Trust: The New York common law trust created by this Agreement.

            Trust Estate: The corpus of the Trust, consisting of the Mortgage
Loans, such amounts as may be held from time to time in the Certificate Account,
the rights of the Trustee to receive the proceeds of all insurance policies and
performance bonds, if any, required to be maintained hereunder or under the
related Servicing Agreement, property which secured a Mortgage Loan and which
has been acquired by foreclosure or deed in lieu of foreclosure and all other
property and rights described in the first paragraph of Section 2.01(a).

            Trustee: HSBC Bank USA, National Association, a national banking
association, or any successor trustee appointed as herein provided.

            Trustee Errors and Omissions Policy: An insurance policy covering
losses caused by errors or omissions of the Trustee and its personnel.

            Type 1 Mortgage Loan: The Mortgage Loans, if any, identified as such
in the Mortgage Loan Schedule as such Mortgage Loan Schedule may be amended from
time to time in connection with a substitution pursuant to Section 2.02 or 2.03,
serviced under the Wells Fargo Bank Servicing Agreement and having a Mid-Month
Receipt Period with respect to all types of Unscheduled Principal Receipts.

            Type 2 Mortgage Loan: The Mortgage Loans, if any, identified as such
in the Mortgage Loan Schedule as such Mortgage Loan Schedule may be amended from
time to time in connection with a substitution pursuant to Section 2.02 or 2.03,
serviced under the Wells Fargo Bank Servicing Agreement and having a Prior Month
Receipt Period with respect to all types of Unscheduled Principal Receipts.

            Uncertificated Lower-Tier Interest: A regular interest in the
Lower-Tier REMIC which is held as an asset of the Middle-Tier REMIC and is
entitled to monthly distributions as provided in Section 5.02(a) hereof. The
Class I-L Interest and Class II-L Interest are Uncertificated Lower-Tier
Interests.

            Uncertificated Middle-Tier Interest: Any of the Class I-A-M1
Interest, the Class I-A-MUR Interest, the Class II-A-M1 Interest, the Class
I-B-M1 Interest, the Class I-B-M2 Interest, the Class I-B-M3 Interest, the Class
I-B-M4 Interest, the Class I-B-M5 Interest, the Class I-B-M6 Interest, the Class
II-B-M1 Interest, the Class II-B-M2 Interest, the Class II-B-M3 Interest, the
Class II-B-M4 Interest, the Class II-B-M5 Interest and the Class II-B-M6
Interest.

            Unpaid Interest Shortfalls: Each of the Class A Unpaid Interest
Shortfalls, the Class I-B-1 Unpaid Interest Shortfall, Class I-B-1-IO Unpaid
Interest Shortfall, the Class I-B-2 Unpaid Interest Shortfall, Class I-B-2-IO
Unpaid Interest Shortfall, the Class I-B-3 Unpaid Interest Shortfall, the Class
I-B-4 Unpaid Interest Shortfall, the Class I-B-5 Unpaid Interest Shortfall, the
Class I-B-6 Unpaid Interest Shortfall, the Class II-B-1 Unpaid Interest
Shortfall, Class II-B-1-IO Unpaid Interest Shortfall, the Class II-B-2 Unpaid
Interest Shortfall, Class II-B-2-IO Unpaid Interest Shortfall, the Class II-B-3
Unpaid Interest Shortfall, the Class II-B-4 Unpaid Interest Shortfall, the Class
II-B-5 Unpaid Interest Shortfall and the Class II-B-6 Unpaid Interest Shortfall.

            Unscheduled Principal Receipt: Any Principal Prepayment or other
recovery of principal on a Mortgage Loan, including, without limitation, the
principal portion of Net Liquidation Proceeds, the principal portion of Net REO
Proceeds, Recoveries and proceeds received from any condemnation award or
proceeds in lieu of condemnation other than that portion of such proceeds
released to the Mortgagor in accordance with the terms of the Mortgage or
Prudent Servicing Practices, but excluding any Liquidation Profits and proceeds
of a repurchase of a Mortgage Loan by the Depositor and any Substitution
Principal Amounts.

            Unscheduled Principal Receipt Period: Either a Mid-Month Receipt
Period or a Prior Month Receipt Period.

            Upper-Tier Certificate: Any one of the Class A Certificates (other
than the portions of the Class I-A-R Certificate represented by the Class I-A-MR
Interest and the Class I-A-LR Interest) and the Class B Certificates.

            Upper-Tier Certificate Account: The trust account established and
maintained pursuant to Section 4.01(e).

            Upper-Tier REMIC: One of the three separate REMICs comprising the
Trust Estate, the assets of which consist of the Uncertificated Middle-Tier
Interests and such amounts as shall from time to time be held in the Upper-Tier
Certificate Account

            U.S. Person: As defined in Section 4.01(g).

            Voting Interest: With respect to any provisions hereof providing for
the action, consent or approval of the Holders of all Certificates evidencing
specified Voting Interests in the Trust Estate, each Class of Interest Only
Certificates will be entitled to 1% of the aggregate Voting Interest represented
by all Certificates and each remaining Class of Certificates will be entitled to
a pro rata portion of the Voting Interest equal to the ratio obtained by
dividing the Principal Balance of such Class by the Aggregate Principal Balance.
Each Certificateholder of a Class will have a Voting Interest equal to the
product of the Voting Interest to which such Class is collectively entitled and
the Percentage Interest in such Class represented by such Holder's Certificates.
With respect to any provisions hereof providing for action, consent or approval
of each Class of Certificates or specified Classes of Certificates, each
Certificateholder of a Class will have a Voting Interest in such Class equal to
such Holder's Percentage Interest in such Class.

            Wells Fargo Bank: Wells Fargo Bank, N.A., or its successor in
interest.

            Wells Fargo Bank Correspondents: The entities identified on a list
provided by Wells Fargo Bank to the Master Servicer, from which Wells Fargo Bank
purchased the Mortgage Loans.

            Wells Fargo Bank Servicing Agreement: The Servicing Agreement
providing for the servicing of those Mortgage Loans that are initially serviced
by Wells Fargo Bank.

            Section 1.02 Acts of Holders.

            (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Agreement to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. Except as herein otherwise expressly provided, such action
shall become effective when such instrument or instruments are delivered to the
Trustee. Proof of execution of any such instrument or of a writing appointing
any such agent shall be sufficient for any purpose of this Agreement and
conclusive in favor of the Trustee, if made in the manner provided in this
Section 1.02. The Trustee shall promptly notify the Master Servicer in writing
of the receipt of any such instrument or writing.

            (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. When such
execution is by a signer acting in a capacity other than his or her individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his or her authority. The fact and date of the execution of any such
instrument or writing, or the authority of the individual executing the same,
may also be proved in any other manner which the Trustee deems sufficient.

            (c) The ownership of Certificates (whether or not such Certificates
shall be overdue and notwithstanding any notation of ownership or other writing
thereon made by anyone other than the Trustee and the Authenticating Agent)
shall be proved by the Certificate Register, and none of the Trustee, the
Depositor or the Master Servicer shall be affected by any notice to the
contrary.

             (d) Any request, demand, authorization, direction, notice, consent,
waiver or other action of the Holder of any Certificate shall bind every future
Holder of the same Certificate and the Holder of every Certificate issued upon
the registration of transfer thereof or in exchange therefor or in lieu thereof
in respect of anything done, omitted or suffered to be done by the Trustee, the
Depositor or the Master Servicer in reliance thereon, whether or not notation of
such action is made upon such Certificate.

            Section 1.03 Effect of Headings and Table of Contents.

            The Article and Section headings in this Agreement and the Table of
Contents are for convenience of reference only and shall not affect the
interpretation or construction of this Agreement.

            Section 1.04 Benefits of Agreement.

            Nothing in this Agreement or in the Certificates, express or
implied, shall give to any Person, other than the parties to this Agreement and
their successors hereunder and the Holders of the Certificates any benefit or
any legal or equitable right, power, remedy or claim under this Agreement.


<PAGE>


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                       ORIGINAL ISSUANCE OF THE CERTIFICATES

            Section 2.01 Conveyance of Mortgage Loans.

            (a) The Depositor, concurrently with the execution and delivery
hereof, does hereby assign to the Trustee, without recourse all the right, title
and interest of the Depositor in and to (a) the Trust Estate, including all
interest and principal received by the Depositor on or with respect to the
Mortgage Loans after the Cut-Off Date (and including scheduled payments of
principal and interest due after the Cut-Off Date but received by the Depositor
on or before the Cut-Off Date and Unscheduled Principal Receipts received or
applied on the Cut-Off Date, but not including payments of principal and
interest due on the Mortgage Loans on or before the Cut-Off Date), (b) the
Insurance Policies, (c) the obligations of the Servicers under the Servicing
Agreements with respect to the Mortgage Loans, (d) the right to receive amounts,
if any, payable on behalf of any Mortgagor from the Subsidy Account relating to
any Subsidy Loan, (e) all of the Depositor's right, title and interest in and to
the proceeds of the Letters of Credit and (f) proceeds of all the foregoing. It
is agreed and understood by the Depositor and the Trustee that it is not
intended that any mortgage loan be included in the Trust Estate that is a
"High-Cost Home Loan" as defined in any of (i) the New Jersey Home Ownership
Act, effective November 27, 2003, (ii) the New Mexico Home Loan Protection Act,
effective January 1, 2004, (iii) the Massachusetts Predatory Home Loan Practices
Act, effective November 7, 2004 or (iv) the Indiana Home Loan Practices Act,
effective January 1, 2005.

            In connection with such assignment, the Depositor shall, with
respect to each Mortgage Loan, deliver, or cause to be delivered, to the
Custodian, on or before the Closing Date the following documents or instruments
with respect to each Mortgage Loan:

            (i) The original Mortgage Note either (A) endorsed in blank or (B)
      endorsed as provided in Section 2.01(d), with all prior and intervening
      endorsements as may be necessary to show a complete chain of endorsements
      or with respect to any Mortgage Loan as to which the original Mortgage
      Note has been permanently lost or destroyed and has not been replaced, a
      lost note affidavit with a copy of the Mortgage Note and, in the case of
      any Mortgage Loan originated in the State of New York documented by a
      NYCEMA, the NYCEMA, the new Mortgage Note, if applicable, the consolidated
      Mortgage Note and the consolidated Mortgage;

            (ii) A recorded original assignment of the related Mortgage from
      Wells Fargo Bank assigning the related Mortgage to the Trustee (which may
      be assigned in blank), certified by the recording office, or, if such
      assignment is in the process of being recorded, a copy of the related
      Mortgage transmitted for recordation certified by an officer of Wells
      Fargo Bank or applicable Wells Fargo Bank Correspondent to be a true and
      correct copy of such assignment submitted for recordation; provided,
      however, if recordation is not required as described below, an assignment
      in recordable form (which may be assigned in blank) with respect to the
      related Mortgage;

            (iii) The original of each assumption agreement, modification,
      written assurance or substitution agreement pertaining to such Mortgage
      Note, if any; and

            (iv) For each Mortgage Loan secured by Co-op Shares, the originals
      of the following documents or instruments:

                  (a)    The loan security agreement;

                  (b)    The stock certificate;

                  (c)    The stock power, executed in blank;

                  (d)    The executed proprietary lease;

                  (e)    The executed recognition agreement;

                  (f)    The executed UCC-1 financing statement with evidence of
                        recording thereon; and

                  (g)    The executed UCC-3 financing statements or other
                        appropriate UCC financing statements required by state
                        law, evidencing a complete and unbroken chain from the
                        mortgagee to the Trustee with evidence of recording
                        thereon (or in a form suitable for recordation).

            (v) For each Letter of Credit, the original advice of such Letter of
      Credit endorsed by the Pledge Holder and Wells Fargo Bank's notice of
      transfer (Exhibit A to the Letter of Credit) of beneficiary of such Letter
      of Credit to the Trustee.

            (b) The Master Servicer shall promptly notify the Depositor, the
Trustee and the Custodian of the occurrence of any Document Transfer Event of
which the Master Servicer had knowledge. Following the receipt of such notice,
the Depositor shall, with respect to each Mortgage Loan, deliver, or cause to be
delivered, to the Custodian, no later than the Document Transfer Date, copies
(which may be in electronic form mutually agreed upon by the Depositor and the
Custodian) of the following additional documents or instruments with respect to
each Mortgage Loan; provided, however, that originals of such documents or
instruments shall be delivered to the Custodian if originals are required under
the law in which the related Mortgaged Property is located in order to exercise
all remedies available to the Trust under applicable law following default by
the related Mortgagor:

            (i) The original recorded Mortgage with evidence of recordation
      noted thereon or attached thereto, together with any addenda or riders
      thereto, or a copy of such recorded Mortgage with such evidence of
      recordation certified to be true and correct by the appropriate
      governmental recording office; or a copy of such recorded Mortgage with
      such evidence of recordation, or if the original Mortgage has been
      submitted for recordation but has not been returned from the applicable
      public recording office, a copy of the Mortgage certified by an officer of
      Wells Fargo Bank or the applicable Wells Fargo Bank Correspondent to be a
      true and correct copy of the original Mortgage submitted for recordation;

            (ii) The original of each assumption agreement, modification,
      written assurance or substitution agreement pertaining to such Mortgage,
      if any, or, if such document is in the process of being recorded, a copy
      of such document, certified by an officer of Wells Fargo Bank or the
      applicable Wells Fargo Bank Correspondent of such Mortgage Loan or by the
      applicable title insurance company, closing agent, settlement agent,
      escrow agent or closing attorney to be a true and correct copy of such
      document transmitted for recordation, if any;

            (iii) For each MERS Mortgage Loan that is not a MOM Mortgage Loan,
      the original assignment showing MERS as the assignee of the Mortgage, with
      evidence of recording thereon or copies thereof certified by an officer of
      Wells Fargo Bank or the applicable Wells Fargo Bank Correspondent to have
      been submitted for recordation;

            (iv) Each original recorded intervening assignment of the Mortgage
      as may be necessary to show a complete chain of title from the Mortgage
      Loan originator to Wells Fargo Bank or Wells Fargo Home Mortgage, Inc.,
      with evidence of recordation noted thereon or attached thereto, or a copy
      of such assignment with such evidence of recordation to be true and
      correct by the appropriate governmental recording office, or, if any such
      assignment has been submitted for recordation but has not been returned
      from the applicable public recording office or is not otherwise available,
      a copy of such assignment certified by an officer of Wells Fargo Bank or
      the applicable Wells Fargo Bank Correspondent to be a true and correct
      copy of the recorded assignment submitted for recordation; and

            (v) The original policy of the title insurance or certificate of
      title insurance or a written commitment to issue such a title insurance
      policy or certificate of title insurance, or a copy of such title
      insurance certified as true and correct by the applicable insurer or any
      attorney's certificate of title with an Officer's Certificate of Wells
      Fargo Bank or the applicable Wells Fargo Bank Correspondent that such
      attorney's certificate of title is customarily used in lieu of a title
      insurance policy in the jurisdiction in which the related mortgage
      property is located.

            (c) If any assignment of a Mortgage to the Trustee is in the process
of being recorded on the Closing Date, the Depositor shall use its best efforts
to cause each such original recorded document or certified copy thereof to be
delivered to the Custodian promptly following its recordation, but in no event
later than one (1) year following the Closing Date. If any Mortgage has been
recorded in the name of MERS or its designee, no assignment of Mortgage in favor
of the Trustee will be required to be prepared or delivered and instead, the
Master Servicer shall enforce any obligation of the Servicers under the
Servicing Agreements to take all actions as are necessary to cause the Trust
Estate to be shown as the owner of the related Mortgage Loan on the records of
MERS for the purpose of the system of recording transfers of beneficial
ownership of mortgages maintained by MERS. The Depositor shall also cause to be
delivered to the Custodian any other original mortgage loan document included in
the Owner Mortgage Loan File if a copy thereof has been delivered. The Depositor
shall pay from its own funds, without any right of reimbursement therefor, the
amount of any costs, liabilities and expenses incurred by the Trust Estate by
reason of the failure of the Depositor to cause to be delivered to the Custodian
within one (1) year following the Closing Date any assignment of a Mortgage
(except with respect to any Mortgage recorded in the name of MERS) not delivered
to the Custodian on the Closing Date.

            In lieu of recording an assignment of any Mortgage the Depositor
may, deliver or cause to be delivered to the Custodian the assignment of the
Mortgage Loan to the Trustee in a form suitable for recordation, if (i) with
respect to a particular state the Trustee has received an Opinion of Counsel
acceptable to it that such recording is not required to make the assignment
effective against the parties to the Mortgage or subsequent purchasers or
encumbrances of the Mortgaged Property or (ii) the Depositor has been advised by
each Rating Agency that non-recordation in a state will not result in a
reduction of the rating assigned by that Rating Agency at the time of initial
issuance of the Certificates. Set forth on Exhibit K attached hereto is a list
of all states where recordation is required by either Rating Agency to obtain
the initial ratings of the Certificates. The Custodian may rely and shall be
protected in relying upon the information contained in such Exhibit K. In the
event that the Custodian receives notice that recording is required to protect
the right, title and interest of the Trustee in and to any such Mortgage Loan
for which recordation of an assignment has not previously been required, the
Custodian shall promptly notify the Trustee and the Custodian shall, within five
Business Days (or such other reasonable period of time mutually agreed upon by
the Custodian and the Trustee) of its receipt of such notice, deliver each
previously unrecorded assignment to the related Servicer for recordation.

            (d) Except for Mortgage Notes endorsed in blank, endorsements shall
comply with the following format:


                                WITHOUT RECOURSE
                              PAY TO THE ORDER OF:

                     HSBC BANK USA, NATIONAL ASSOCIATION, AS
                     TRUSTEE under the pooling and servicing
                          agreement dated as of [date]
                          and its successors and assigns,

          [Wells Fargo Bank, N.A.] or [Wells Fargo Home Mortgage, Inc.]
                             [Signature of Officer]
                           [Officer's Name and Title]

            Except where assignments in blank are authorized or in the case of
any Mortgage registered in the name of MERS, assignments of any Mortgage shall
comply with the following:

                     HSBC BANK USA, NATIONAL ASSOCIATION, AS
                                     TRUSTEE
                         and its successors and assigns

            (e) Concurrently with the execution and delivery of this Agreement,
the Depositor shall deliver the Mortgage Loan Schedule to the Trustee, the
Master Servicer and the Custodian. The Depositor and the Master Servicer shall
provide a copy of the Mortgage Loan Schedule to any Certificateholders upon
written request made to it at the addresses set forth on Exhibit F, as the same
may be amended from time to time by written notice from such party to the other
parties hereto.

            Section 2.02 Acceptance by Custodian.

            Subject to the provisions of the following paragraph, pursuant to
the Custodial Agreement, the Custodian, on behalf of the Trustee, will declare
that it holds and will hold the documents delivered to it pursuant to Section
2.01(a) above and the other documents constituting a part of the Owner Mortgage
Loan Files or Retained Mortgage Loan Files (after the occurrence of a Document
Transfer Event) delivered to it in trust, upon the trusts herein set forth, for
the use and benefit of all present and future Certificateholders. Upon execution
of this Agreement, the Custodian will deliver to the Depositor and the Trustee
an initial certification in the form of Exhibit N hereto, to the effect that,
except as may be specified in a list of exceptions attached thereto, it has
received the original Mortgage Notes relating to each Mortgage Loan on the
Mortgage Loan Schedule.

            The Custodian will review each Owner Mortgage Loan File within 45
days after execution of this Agreement. The Custodian will deliver no later than
30 days after completion of such review to the Depositor and the Trustee a final
certification in the form of Exhibit O hereto to the effect that, except as may
be specified in a list of exceptions attached thereto, all required documents
set forth in Section 2.01(a) have been executed and received and appear regular
on their face, and that such documents relate to the Mortgage Loans identified
in the Mortgage Loan Schedule based on a comparison of the Mortgage Loan
identifying number, Mortgagor name and street address, and in so doing the
Custodian may rely on the purported due execution and genuineness of any such
document and on the purported genuineness of any signature thereon.

            If there are exceptions attached to the final certification, the
Depositor shall have a period of 60 days after the date of receipt of the final
certification within which to correct or cure any such defects. The Depositor
hereby covenants and agrees that, if any material defect is not so corrected or
cured, the Depositor will, not later than 60 days after receipt of the final
certification referred to above respecting such defect, either (i) repurchase
the related Mortgage Loan or any property acquired in respect thereof from the
Trust Estate at a price equal to the Repurchase Price or (ii) if within two
years of the Startup Day, or such other period permitted by the REMIC
Provisions, substitute for any Mortgage Loan to which such material defect
relates, a new mortgage loan (a "Substitute Mortgage Loan") having such
characteristics so that the representations and warranties of the Depositor set
forth in Section 2.03(b) hereof (other than Section 2.03(b)(i)) would not have
been incorrect had such Substitute Mortgage Loan originally been a Mortgage
Loan. In no event shall any Substitute Mortgage Loan have an unpaid principal
balance, as of the date of substitution, greater than the Scheduled Principal
Balance (reduced by the scheduled payment of principal due on the Due Date in
the month of substitution) of the Mortgage Loan for which it is substituted. In
addition, such Substitute Mortgage Loan (i) shall have a Loan-to-Value Ratio
less than or equal to and a Net Mortgage Interest Rate equal to that of the
Mortgage Loan for which it is substituted, (ii) shall have the same Gross Margin
and Index as that of the Mortgage Loan for which it is substituted and (iii)
shall have the same frequency of mortgage rate adjustment as that of the
Mortgage Loan for which it is substituted.

            The Depositor shall determine the Repurchase Price or the
eligibility of any Substitute Mortgage Loan and the Trustee shall be protected
in relying on such determination.

             In the case of a repurchased Mortgage Loan or property, the
Repurchase Price shall be deposited by the Depositor in the Certificate Account
maintained by the Master Servicer pursuant to Section 3.01. In the case of a
Substitute Mortgage Loan, the Owner Mortgage Loan File (and Retained Mortgage
Loan File, if required pursuant to Section 2.01(b) hereof) relating thereto
shall be delivered to the Custodian and the Substitution Principal Amount (if
any), together with (i) interest on such Substitution Principal Amount at the
applicable Net Mortgage Interest Rate to the following Due Date of such Mortgage
Loan which is being substituted for and (ii) an amount equal to the aggregate
amount of unreimbursed Periodic Advances in respect of interest previously made
by the Servicer, the Master Servicer or the Trustee with respect to such
Mortgage Loan, shall be deposited in the Certificate Account. The Monthly
Payment on the Substitute Mortgage Loan for the Due Date in the month of
substitution shall not be part of the Trust Estate. Upon receipt by the
Custodian of a Request for Release signed by an officer of the Depositor, the
Custodian shall release to the Depositor the Owner Mortgage Loan File (and
Retained Mortgage Loan File, if applicable) of the Mortgage Loan being removed.
The Trustee shall execute and deliver such instrument of transfer or assignment
(or, in the case of a Mortgage Loan registered in the name of MERS or its
designee, the Master Servicer shall enforce the obligation of the applicable
Servicer under the related Servicing Agreement to take all necessary action to
reflect such assignment on the records of MERS), in each case without recourse,
as shall be necessary to vest in the Depositor legal and beneficial ownership of
such substituted or repurchased Mortgage Loan or property. It is understood and
agreed that the obligation of the Depositor to substitute a new Mortgage Loan
for or repurchase any Mortgage Loan or property as to which such a material
defect in a constituent document exists shall constitute the sole remedy
respecting such defect available to the Certificateholders or the Trustee on
behalf of the Certificateholders. The failure of the Custodian to give the final
certification or the Trustee to give any notice within the required time periods
shall not affect or relieve the Depositor's obligation to repurchase any
Mortgage Loan pursuant to this Section 2.02.

            The Trustee shall be responsible for enforcing the Depositor's
obligations under this Section 2.02. If the Trustee receives written notice from
the Custodian or the Master Servicer that the defect is not cured by the
Depositor within 60 days after the Trustee's notice, the Trustee shall enforce
the Depositor's obligation to repurchase such Mortgage Loan or substitute for
such Mortgage Loan in accordance with the provisions of this Section 2.02. In
connection with any substitution permitted by this Section 2.02, the Master
Servicer shall verify that the unpaid principal balance and the Loan-to-Value
Ratio of the Substitute Mortgage Loan satisfy the requirements of this Section
2.02.

            Section 2.03 Representations and Warranties of the Master Servicer
and the Depositor.

            (a) The Master Servicer hereby represents and warrants to the
Trustee for the benefit of the Certificateholders that, as of the date of
execution of this Agreement:

            (i) The Master Servicer is a national banking association duly
      chartered and validly existing in good standing under the laws of the
      United States;

            (ii) The execution and delivery of this Agreement by the Master
      Servicer and its performance and compliance with the terms of this
      Agreement will not violate the Master Servicer's corporate charter or
      by-laws or constitute a default (or an event which, with notice or lapse
      of time, or both, would constitute a default) under, or result in the
      breach of, any material contract, agreement or other instrument to which
      the Master Servicer is a party or which may be applicable to the Master
      Servicer or any of its assets;

            (iii) This Agreement, assuming due authorization, execution and
      delivery by the Trustee and the Depositor, constitutes a valid, legal and
      binding obligation of the Master Servicer, enforceable against it in
      accordance with the terms hereof subject to applicable bankruptcy,
      insolvency, reorganization, moratorium and other laws affecting the
      enforcement of creditors' rights generally and to general principles of
      equity, regardless of whether such enforcement is considered in a
      proceeding in equity or at law;

            (iv) The Master Servicer is not in default with respect to any order
      or decree of any court or any order, regulation or demand of any federal,
      state, municipal or governmental agency, which default might have
      consequences that would materially and adversely affect the condition
      (financial or other) or operations of the Master Servicer or its
      properties or might have consequences that would materially affect its
      performance hereunder;

            (v) Except as otherwise disclosed in the Prospectus, no legal or
      governmental proceedings are pending (or known to be contemplated) against
       the Master Servicer that would be material to Certificateholders;

            (vi) Except as otherwise disclosed in the Prospectus, the Master
      Servicer is not aware and has not received notice that any default, early
      amortization or other performance triggering event has occurred as to any
      other securitization due to any act or failure to act of the Master
      Servicer under such securitization;

            (vii) Except as otherwise disclosed in the Prospectus, the Master
      Servicer has not been terminated as master servicer in a residential
      mortgage loan securitization, either due to a master servicing default or
      to application of a master servicing performance test or trigger;

            (viii) Except as otherwise disclosed in the Prospectus, no material
      noncompliance with the applicable servicing criteria with respect to other
      securitizations of residential mortgage loans involving the Master
      Servicer as a master servicer has been disclosed or reported by the Master
      Servicer within the past three (3) years;

            (ix) Except as otherwise disclosed in the Prospectus, no material
      changes to the Master Servicer's policies or procedures with respect to
      the master servicing function it will perform under this Agreement for
      mortgage loans of a type similar to the Mortgage Loans have occurred
      during the three-year period immediately preceding the date of this
      Agreement;

            (x) Except as otherwise disclosed in the Prospectus, there is no
      material risk that the Master Servicer's financial condition could affect
      one or more aspects of the performance by the Master Servicer of its
      master servicing obligations under this Agreement in a manner that could
      have a material impact on the performance of the Mortgage Loans or the
      Certificates; and

            (xi) Except as disclosed in the Prospectus, there are no
      affiliations, relationships or transactions relating to the Master
      Servicer and any party identified in Item 1119 of Regulation AB of the
      type described therein.

            It is understood and agreed that the representations and warranties
set forth in this Section 2.03(a) shall survive delivery of the respective Owner
Mortgage Loan Files to the Trustee or the Custodian. Upon discovery by any of
the Depositor, the Master Servicer or the Trustee of a breach of any of the
representations and warranties set forth in this Section 2.03(a), the party
discovering such breach shall give prompt written notice, which shall not exceed
two days, to the other parties. The Master Servicer shall consult with the
Depositor to determine if any such breach is material and any breach determined
by the Depositor to be material shall be included by the Master Servicer on the
next Distribution Date Statement prepared pursuant to Section 4.04.

            (b) The Depositor hereby represents and warrants to the Trustee for
the benefit of Certificateholders that, as of the date of execution of this
Agreement, with respect to the Mortgage Loans, or each Mortgage Loan, as the
case may be:

            (i) The information set forth in the Mortgage Loan Schedule was true
      and correct in all material respects at the date or dates respecting which
      such information is furnished as specified in the Mortgage Loan Schedule;

            (ii) Immediately prior to the transfer and assignment contemplated
      herein, the Depositor was the sole owner and holder of the Mortgage Loan
       free and clear of any and all liens, pledges, charges or security
      interests of any nature and has full right and authority to sell and
      assign the same;

            (iii) The Mortgage is a valid, subsisting and enforceable first lien
      on the property therein described, and the Mortgaged Property is free and
      clear of all encumbrances and liens having priority over the first lien of
      the Mortgage except for liens for real estate taxes and special
      assessments not yet due and payable and liens or interests arising under
      or as a result of any federal, state or local law, regulation or ordinance
      relating to hazardous wastes or hazardous substances, and, if the related
      Mortgaged Property is a condominium unit, any lien for common charges
      permitted by statute or homeowners association fees; and if the Mortgaged
      Property consists of shares of a cooperative housing corporation, any lien
      for amounts due to the cooperative housing corporation for unpaid
      assessments or charges or any lien of any assignment of rents or
      maintenance expenses secured by the real property owned by the cooperative
      housing corporation; and any security agreement, chattel mortgage or
      equivalent document related to, and delivered to the Trustee or to the
      Custodian with, any Mortgage establishes in the Depositor a valid and
      subsisting first lien on the property described therein and the Depositor
      has full right to sell and assign the same to the Trustee;

            (iv) Neither the Depositor nor any prior holder of the Mortgage or
      the related Mortgage Note has modified the Mortgage or the related
      Mortgage Note in any material respect, satisfied, canceled or subordinated
       the Mortgage in whole or in part, released the Mortgaged Property in whole
      or in part from the lien of the Mortgage, or executed any instrument of
      release, cancellation, modification or satisfaction, except in each case
      as is reflected in an agreement delivered to the Trustee or the Custodian
      pursuant to Section 2.01(a);

            (v) All taxes, governmental assessments, insurance premiums, and
      water, sewer and municipal charges, which previously became due and owing
      have been paid, or an escrow of funds has been established, to the extent
      permitted by law, in an amount sufficient to pay for every such item which
      remains unpaid; and the Depositor has not advanced funds, or received any
      advance of funds by a party other than the Mortgagor, directly or
      indirectly (except pursuant to any Subsidy Loan arrangement) for the
      payment of any amount required by the Mortgage, except for interest
      accruing from the date of the Mortgage Note or date of disbursement of the
      Mortgage Loan proceeds, whichever is later, to the day which precedes by
      thirty days the first Due Date under the related Mortgage Note;

            (vi) The Mortgaged Property is undamaged by water, fire, earthquake,
      earth movement other than earthquake, windstorm, flood, tornado or similar
      casualty (excluding casualty from the presence of hazardous wastes or
      hazardous substances, as to which the Depositor makes no representations),
      in a manner which would adversely affect the value of the Mortgaged
      Property as security for the Mortgage Loan or the use for which the
      premises were intended and to the best of the Depositor's knowledge, there
      is no proceeding pending or threatened for the total or partial
      condemnation of the Mortgaged Property;

            (vii) The Mortgaged Property is free and clear of all mechanics' and
      materialmen's liens or liens in the nature thereof; provided, however,
      that this warranty shall be deemed not to have been made at the time of
      the initial issuance of the Certificates if a title policy affording, in
      substance, the same protection afforded by this warranty is furnished to
      the Trustee by the Depositor;

             (viii) Except for Mortgage Loans secured by Co-op Shares and
      Mortgage Loans secured by residential long-term leases, the Mortgaged
      Property consists of a fee simple estate in real property; all of the
      improvements which are included for the purpose of determining the
      appraised value of the Mortgaged Property lie wholly within the boundaries
      and building restriction lines of such property and no improvements on
      adjoining properties encroach upon the Mortgaged Property (unless insured
      against under the related title insurance policy); and to the best of the
      Depositor's knowledge, the Mortgaged Property and all improvements thereon
      comply with all requirements of any applicable zoning and subdivision laws
      and ordinances;

            (ix) The Mortgage Loan meets, or is exempt from, applicable state,
      federal or local laws, regulations and other requirements, pertaining to
      usury, and the Mortgage Loan is not usurious;

            (x) To the best of the Depositor's knowledge, all inspections,
      licenses and certificates required to be made or issued with respect to
      all occupied portions of the Mortgaged Property and, with respect to the
      use and occupancy of the same, including, but not limited to, certificates
      of occupancy and fire underwriting certificates, have been made or
      obtained from the appropriate authorities;

            (xi) All payments required to be made up to the Due Date immediately
      preceding the Cut-Off Date for such Mortgage Loan under the terms of the
      related Mortgage Note have been made and no Mortgage Loan had more than
      one delinquency in the 12 months preceding the Cut-Off Date;

            (xii) The Mortgage Note, the related Mortgage and other agreements
      executed in connection therewith are genuine, and each is the legal, valid
      and binding obligation of the maker thereof, enforceable in accordance
      with its terms, except as such enforcement may be limited by bankruptcy,
      insolvency, reorganization or other similar laws affecting the enforcement
      of creditors' rights generally and by general equity principles
      (regardless of whether such enforcement is considered in a proceeding in
      equity or at law); and, to the best of the Depositor's knowledge, all
      parties to the Mortgage Note and the Mortgage had legal capacity to
      execute the Mortgage Note and the Mortgage and each Mortgage Note and
      Mortgage has been duly and properly executed by the Mortgagor;

            (xiii) Each Mortgage Loan at the time it was originated complied in
      all material respects with applicable federal, state and local laws
      including, without limitation, truth-in-lending, real estate settlement
      procedures, consumer credit protection, equal credit opportunity,
      predatory and abusive lending laws and disclosure laws;

            (xiv) The proceeds of the Mortgage Loans have been fully disbursed,
      there is no requirement for future advances thereunder and any and all
      requirements as to completion of any on-site or off-site improvements and
      as to disbursements of any escrow funds therefor have been complied with
      (except for escrow funds for exterior items which could not be completed
      due to weather and escrow funds for the completion of swimming pools); and
      all costs, fees and expenses incurred in making, closing or recording the
      Mortgage Loan have been paid, except recording fees with respect to
      Mortgages not recorded as of the Closing Date;

            (xv) The Mortgage Loan (except any Mortgage Loan secured by a
      Mortgaged Property located in any jurisdiction, as to which an opinion of
      counsel of the type customarily rendered in such jurisdiction in lieu of
      title insurance is instead received) is covered by an American Land Title
      Association mortgagee title insurance policy or other generally acceptable
      form of policy or insurance acceptable to Fannie Mae or Freddie Mac,
      issued by a title insurer acceptable to Fannie Mae or Freddie Mac insuring
      the originator, its successors and assigns, as to the first priority lien
      of the Mortgage in the original principal amount of the Mortgage Loan and
       subject only to (A) the lien of current real property taxes and
      assessments not yet due and payable, (B) covenants, conditions and
      restrictions, rights of way, easements and other matters of public record
      as of the date of recording of such Mortgage acceptable to mortgage
      lending institutions in the area in which the Mortgaged Property is
      located or specifically referred to in the appraisal performed in
      connection with the origination of the related Mortgage Loan, (C) liens
      created pursuant to any federal, state or local law, regulation or
      ordinance affording liens for the costs of clean-up of hazardous
      substances or hazardous wastes or for other environmental protection
      purposes and (D) such other matters to which like properties are commonly
      subject which do not individually, or in the aggregate, materially
      interfere with the benefits of the security intended to be provided by the
      Mortgage; the Depositor is the sole insured of such mortgagee title
      insurance policy, the assignment to the Trustee of the Depositor's
      interest in such mortgagee title insurance policy does not require any
      consent of or notification to the insurer which has not been obtained or
      made, such mortgagee title insurance policy is in full force and effect
      and will be in full force and effect and inure to the benefit of the
      Trustee, no claims have been made under such mortgagee title insurance
      policy, and no prior holder of the related Mortgage, including the
      Depositor, has done, by act or omission, anything which would impair the
      coverage of such mortgagee title insurance policy;

            (xvi) The Mortgaged Property securing each Mortgage Loan is insured
      by an insurer acceptable to Fannie Mae or Freddie Mac against loss by fire
      and such hazards as are covered under a standard extended coverage
      endorsement, in an amount which is not less than the lesser of 100% of the
      insurable value of the Mortgaged Property and the outstanding principal
      balance of the Mortgage Loan, but in no event less than the minimum amount
      necessary to fully compensate for any damage or loss on a replacement cost
      basis; if the Mortgaged Property is a condominium unit, it is included
      under the coverage afforded by a blanket policy for the project; if upon
      origination of the Mortgage Loan, the improvements on the Mortgaged
      Property were in an area identified in the Federal Register by the Federal
      Emergency Management Agency as having special flood hazards, a flood
      insurance policy meeting the requirements of the current guidelines of the
      Federal Insurance Administration is in effect with a generally acceptable
       insurance carrier, in an amount representing coverage not less than the
      least of (A) the outstanding principal balance of the Mortgage Loan, (B)
      the full insurable value of the Mortgaged Property and (C) the maximum
      amount of insurance which was available under the National Flood Insurance
      Act of 1968, as amended; and each Mortgage obligates the Mortgagor
      thereunder to maintain all such insurance at the Mortgagor's cost and
      expense;

            (xvii) To the best of the Depositor's knowledge, there is no
      default, breach, violation or event of acceleration existing under the
      Mortgage or the related Mortgage Note and no event which, with the passage
      of time or with notice and the expiration of any grace or cure period,
      would constitute a default, breach, violation or event of acceleration;
      the Depositor has not waived any default, breach, violation or event of
      acceleration; and no foreclosure action is currently threatened or has
       been commenced with respect to the Mortgage Loan;

            (xviii) No Mortgage Note or Mortgage is subject to any right of
      rescission, set-off, counterclaim or defense, including the defense of
      usury, nor will the operation of any of the terms of the Mortgage Note or
      Mortgage, or the exercise of any right thereunder, render the Mortgage
      Note or Mortgage unenforceable, in whole or in part, or subject it to any
      right of rescission, set-off, counterclaim or defense, including the
      defense of usury, and no such right of rescission, set-off, counterclaim
      or defense has been asserted with respect thereto;

            (xix) Each Mortgage Note is payable in monthly payments, resulting
      in complete amortization of the Mortgage Loan over a term of not more than
      360 months;

            (xx) Each Mortgage contains customary and enforceable provisions
      such as to render the rights and remedies of the holder thereof adequate
      for the realization against the Mortgaged Property of the benefits of the
      security, including realization by judicial foreclosure (subject to any
      limitation arising from any bankruptcy, insolvency or other law for the
      relief of debtors), and there is no homestead or other exemption available
      to the Mortgagor which would interfere with such right of foreclosure;

            (xxi) To the best of the Depositor's knowledge, no Mortgagor is a
      debtor in any state or federal bankruptcy or insolvency proceeding;

            (xxii) Each Mortgaged Property is located in the United States and
      consists of a one- to four-unit residential property, which may include a
      detached home, townhouse, condominium unit or a unit in a planned unit
      development or, in the case of Mortgage Loans secured by Co-op Shares,
      leases or occupancy agreements;

            (xxiii) The Mortgage Loan is a "qualified mortgage" within the
      meaning of Section 860G(a)(3) of the Code;

            (xxiv) With respect to each Mortgage where a lost note affidavit has
      been delivered to the Custodian in place of the related Mortgage Note, the
      related Mortgage Note is no longer in existence;

            (xxv) In the event that the Mortgagor is an inter vivos "living"
      trust, (i) such trust is in compliance with Fannie Mae or Freddie Mac
      standards for inter vivos trusts and (ii) holding title to the Mortgaged
      Property in such trust will not diminish any rights as a creditor
      including the right to full title to the Mortgaged Property in the event
      foreclosure proceedings are initiated;

            (xxvi) If the Mortgage Loan is secured by a long-term residential
      lease, (1) the lessor under the lease holds a fee simple interest in the
      land; (2) the terms of such lease expressly permit the mortgaging of the
      leasehold estate, the assignment of the lease without the lessor's consent
      and the acquisition by the holder of the Mortgage of the rights of the
      lessee upon foreclosure or assignment in lieu of foreclosure or provide
      the holder of the Mortgage with substantially similar protections; (3) the
      terms of such lease do not (a) allow the termination thereof upon the
      lessee's default without the holder of the Mortgage being entitled to
      receive written notice of, and opportunity to cure, such default, (b)
      allow the termination of the lease in the event of damage or destruction
      as long as the Mortgage is in existence, (c) prohibit the holder of the
      Mortgage from being insured (or receiving proceeds of insurance) under the
      hazard insurance policy or policies relating to the Mortgaged Property or
      (d) permit any increase in rent other than pre-established increases set
      forth in the lease; (4) the original term of such lease is not less than
      15 years; (5) the term of such lease does not terminate earlier than five
      years after the maturity date of the Mortgage Note; and (6) the Mortgaged
      Property is located in a jurisdiction in which the use of leasehold
      estates in transferring ownership in residential properties is a widely
      accepted practice;

            (xxvii) No Mortgage Loan is a "high cost" loan as defined under any
      federal, state or local law applicable to such Mortgage Loan at the time
      of its origination;

            (xxviii) No Mortgage Loan is serviced by the Trustee or an affiliate
      of the Trustee; and

            (xxix) No Mortgage Loan (other than a Mortgage Loan that is a New
      Jersey covered purchase loan) is a High Cost Loan or Covered Loan, as
      applicable (as such terms are defined in the then current S&P's LEVELS(R)
      Glossary which is now Version 5.7, Appendix E) and no Mortgage Loan
       originated on or after October 1, 2002 through March 6, 2003 is governed
      by the Georgia Fair Lending Act.

            Notwithstanding the foregoing, no representations or warranties are
made by the Depositor as to the environmental condition of any Mortgaged
Property; the absence, presence or effect of hazardous wastes or hazardous
substances on any Mortgaged Property; any casualty resulting from the presence
or effect of hazardous wastes or hazardous substances on, near or emanating from
any Mortgaged Property; the impact on Certificateholders of any environmental
condition or presence of any hazardous substance on or near any Mortgaged
Property; or the compliance of any Mortgaged Property with any environmental
laws, nor is any agent, person or entity otherwise affiliated with the Depositor
authorized or able to make any such representation, warranty or assumption of
liability relative to any Mortgaged Property. In addition, no representations or
warranties are made by the Depositor with respect to the absence or effect of
fraud in the origination of any Mortgage Loan.

            It is understood and agreed that the representations and warranties
set forth in this Section 2.03(b) shall survive delivery of the respective Owner
Mortgage Loan Files (and Retained Mortgage Loan Files, if applicable) to the
Custodian and shall inure to the benefit of the Trustee notwithstanding any
restrictive or qualified endorsement or assignment.

            (c) Upon discovery by any of the Depositor, the Master Servicer, the
Trustee or the Custodian that any of the representations and warranties made in
subsection (b) above is not accurate (referred to herein as a "breach") and,
except for a breach of the representation and warranty set forth in subsection
(b)(i), where such breach is a result of the Cut-Off Date Principal Balance of a
Mortgage Loan being greater, by $1,000 or greater, than the Cut-Off Date
Principal Balance of such Mortgage Loan indicated on the Mortgage Loan Schedule,
that such breach materially and adversely affects the interests of the
Certificateholders in the related Mortgage Loan, the party discovering such
breach shall give prompt written notice (not to exceed two days after discovery)
to the other parties to this Agreement and the Custodian (any Custodian being so
obligated under a Custodial Agreement). Within 60 days of the earlier of its
discovery or its receipt of notice of any such breach, the Depositor shall cure
such breach in all material respects or shall either (i) repurchase the Mortgage
Loan or any property acquired in respect thereof from the Trust Estate at a
price equal to the Repurchase Price; provided that if the Depositor elects to
repurchase a Mortgage Loan due to a breach of the representation and warranty
set forth in subsection (b)(i), where such breach is a result of the Cut-Off
Date Principal Balance of a Mortgage Loan being greater, by $1,000 or greater,
than the Cut-Off Date Principal Balance of such Mortgage Loan indicated on the
Mortgage Loan Schedule, such repurchase is only permitted within 90 days of the
Closing Date or (ii) if within two years of the Startup Day, or such other
period permitted by the REMIC Provisions, substitute for such Mortgage Loan in
the manner described in Section 2.02. In addition to the foregoing, if a breach
of the representation set forth in clause (b)(xiii) or (xxix) of this Section
2.03 occurs as a result of a violation of an applicable predatory or abusive
lending law, the Depositor shall reimburse the Trust for all costs and damages
including, but not limited to, reasonable attorneys' fees and costs, incurred by
the Trust as a result of the violation of such law (such amount, the
"Reimbursement Amount"). The Repurchase Price, the Substitution Principal
Amount, if any, plus accrued interest thereon and the other amounts referred to
in Section 2.02, and any Reimbursement Amount shall be deposited in the
Certificate Account. It is understood and agreed, except with respect to the
second preceding sentence, that the obligation of the Depositor to repurchase or
substitute for any Mortgage Loan or property as to which such a breach has
occurred and is continuing shall constitute the sole remedy respecting such
breach available to Certificateholders or the Trustee on behalf of
Certificateholders, and such obligation shall survive until termination of the
Trust Estate hereunder.

            The Trustee shall be responsible for enforcing the Depositor's
obligations under this Section 2.03. If the Trustee receives written notice from
the Master Servicer or the Custodian that such breach is not cured by the
Depositor within 60 days after the Trustee's notice, the Trustee shall enforce
the Depositor's obligation to repurchase such Mortgage Loan or substitute for
such Mortgage Loan in accordance with the provisions of this Section 2.03. In
connection with any substitution permitted by this Section 2.03, the Master
Servicer shall verify that the unpaid principal balance and the Loan-to-Value
Ratio of the Substitute Mortgage Loan satisfy the requirements of this Section
2.03.

            Section 2.04 Execution and Delivery of Certificates.

            The Trustee acknowledges (i) the assignment to it of the Mortgage
Loans, (ii) the issuance of and hereby declares that it holds the Uncertificated
Lower-Tier Interests on behalf of the Middle-Tier REMIC and Certificateholders
and (iii) the issuance of and hereby declares that it holds the Uncertificated
Middle-Tier Interests on behalf of the Upper-Tier REMIC and Certificateholders.
The Trustee acknowledges the delivery of the Owner Mortgage Loan Files to the
Custodian, on behalf of the Trustee. The Paying Agent, concurrently with such
delivery, has executed and delivered to or upon the order of the Depositor, in
exchange for the Mortgage Loans and the Uncertificated Middle-Tier Interests and
Uncertificated Lower-Tier Interests, together with all other assets included in
the definition of "Trust Estate," receipt of which is hereby acknowledged,
Certificates in authorized denominations which, together with the Uncertificated
Lower-Tier Interests and the Uncertificated Middle-Tier Interests, evidence
ownership of the entire Trust Estate.

            Section 2.05 Designation of Certificates; Designation of Startup Day
and Latest Possible Maturity Date.

            The Depositor hereby designates the Classes of Class A Certificates
(other than the Residual Certificate) and the Classes of Class B Certificates as
classes of "regular interests" and the Class I-A-R Interest as the single class
of "residual interest" in the Upper-Tier REMIC for the purposes of Code Sections
860G(a)(1) and 860G(a)(2), respectively. The Depositor hereby further designates
the Class I-A-M1 Interest, Class I-A-MUR Interest, Class II-A-M1 Interest, Class
I-B-M1 Interest, Class I-B-M2 Interest, Class I-B-M3 Interest, Class I-B-M4
Interest, Class I-B-M5 Interest, Class I-B-M6 Interest, Class II-B-M1 Interest,
Class II-B-M2 Interest, Class II-B-M3 Interest, Class II-B-M4 Interest, Class
II-B-M5 Interest and Class II-B-M6 Interest as classes of "regular interests"
and the Class I-A-MR Interest as the single class of "residual interest" in the
Middle-Tier REMIC for purposes of Code Sections 860G(a)(1) and 860G(a)(2),
respectively. The Depositor hereby further designates the Class I-L Interest and
Class II-L Interest as classes of "regular interests" and the Class I-A-LR
Interest as the single class of "residual interest" in the Lower-Tier REMIC for
the purposes of Code Sections 860G(a)(1) and 860G(a)(2), respectively. The
Closing Date is hereby designated as the "Startup Day" of each of the Upper-Tier
REMIC, the Middle-Tier REMIC and the Lower-Tier REMIC within the meaning of Code
Section 860G(a)(9). The "latest possible maturity date" of the regular interests
in the Upper-Tier REMIC, the Middle-Tier REMIC and the Lower-Tier REMIC is
November 25, 2036 for purposes of Code Section 860G(a)(1).


<PAGE>


                                   ARTICLE III

                  ADMINISTRATION OF THE TRUST ESTATE; SERVICING
                              OF THE MORTGAGE LOANS

            Section 3.01 Certificate Account.

            (a) The Master Servicer shall establish and maintain a Certificate
Account for the deposit of funds received by the Master Servicer with respect to
the Mortgage Loans serviced by each Servicer pursuant to each of the Servicing
Agreements. Such account shall be maintained as an Eligible Account. The Master
Servicer shall give notice to each Servicer and the Depositor of the location of
the Certificate Account and of any change in the location thereof.

            (b) The Master Servicer shall deposit into the Certificate Account
on the day of receipt thereof all amounts received by it from any Servicer
pursuant to any of the Servicing Agreements and amounts received from draws on
any Letters of Credit and shall, in addition, deposit into the Certificate
Account the following amounts, in the case of amounts specified in clauses (i)
and (iii), not later than the Business Day preceding the Distribution Date on
which such amounts are required to be distributed to Certificateholders and, in
the case of the amounts specified in clause (ii), not later than the Business
Day next following the day of receipt and posting by the Master Servicer:

            (i) Periodic Advances pursuant to Section 3.03(a) made by the Master
      Servicer or the Trustee, if any, and any amounts deemed received by the
      Master Servicer pursuant to Section 3.01(d);

            (ii) in the case of any Mortgage Loan that is repurchased by the
      Depositor pursuant to Section 2.02, 2.03, 3.08 or 9.01 or that is
      auctioned by the Master Servicer pursuant to Section 3.08, the purchase
      price therefor or, where applicable, any Substitution Principal Amount and
      any amounts received in respect of the interest portion of unreimbursed
      Periodic Advances; and

            (iii) any Compensating Interest for such Distribution Date.

            (c) The Master Servicer may cause the funds in the Certificate
Account to be invested in Eligible Investments. No such Eligible Investments
will be sold or disposed of at a gain prior to maturity unless the Master
Servicer has received an Opinion of Counsel or other evidence satisfactory to it
that such sale or disposition will not cause the Trust Estate to be subject to
Prohibited Transactions Tax, otherwise subject the Trust Estate to tax, or cause
either of the Upper-Tier REMIC, the Middle-Tier REMIC or the Lower-Tier REMIC to
fail to qualify as a REMIC while any Certificates are outstanding. Any amounts
deposited in the Certificate Account prior to the Distribution Date may be
invested for the account of the Master Servicer and any investment income
thereon shall be additional compensation to the Master Servicer for services
rendered under this Agreement. The amount of any losses incurred in respect of
any such investments shall be deposited in the Certificate Account by the Master
Servicer out of its own funds immediately as realized, without any right of
reimbursement therefor from the Trust Estate.

            (d) For purposes of this Agreement, the Master Servicer will be
deemed to have received from a Servicer on the applicable Remittance Date for
such funds all amounts deposited by such Servicer into the Custodial P&I Account
maintained in accordance with the applicable Servicing Agreement, if such
Custodial P&I Account is not an Eligible Account as defined in this Agreement,
to the extent such amounts are not actually received by the Master Servicer on
such Remittance Date as a result of the bankruptcy, insolvency, receivership or
other financial distress of the depository institution in which such Custodial
P&I Account is being held. To the extent that amounts so deemed to have been
received by the Master Servicer are subsequently remitted to the Master
Servicer, the Master Servicer shall be entitled to retain such amounts.

            Section 3.02 Permitted Withdrawals from the Certificate Account.

            (a) The Master Servicer may, from time to time, make withdrawals
from the Certificate Account for the following purposes (limited, in the case of
Servicer reimbursements, to cases where funds in the respective Custodial P&I
Account are not sufficient therefor):

            (i) to reimburse the Master Servicer, the Trustee or any Servicer
      for Periodic Advances made by the Master Servicer or the Trustee pursuant
      to Section 3.03(a) or any Servicer pursuant to any Servicing Agreement
      with respect to previous Distribution Dates, such right to reimbursement
      pursuant to this subclause (i) being limited to amounts received on or in
      respect of particular Mortgage Loans (including, for this purpose,
      Liquidation Proceeds, REO Proceeds and proceeds from the purchase, sale,
      repurchase or substitution of Mortgage Loans pursuant to Section 2.02,
      2.03, 3.08 or 9.01) respecting which any such Periodic Advance was made;

            (ii) to reimburse from funds relating to the applicable Loan Group
      any Servicer, the Master Servicer or the Trustee for any Periodic Advances
      determined in good faith to have become Nonrecoverable Advances;

            (iii) to reimburse the Master Servicer or any Servicer from
      Liquidation Proceeds for Liquidation Expenses and for amounts expended by
      the Master Servicer or any Servicer pursuant hereto or to any Servicing
      Agreement, respectively, in good faith in connection with the restoration
      of damaged property or for foreclosure expenses;

            (iv) from any Mortgagor payment on account of interest or other
      recovery (including Net REO Proceeds) with respect to a particular
      Mortgage Loan, to pay the Master Servicing Fee with respect to such
      Mortgage Loan to the Master Servicer;

            (v) to reimburse the Master Servicer, any Servicer or the Trustee
      (or, in certain cases, the Depositor) for expenses incurred by it
      (including taxes paid on behalf of the Trust Estate) and recoverable by or
      reimbursable to it pursuant to Section 3.03(c), Section 6.03, the second
      or third paragraphs of Section 8.06 or the third sentence of Section
      8.13(a) or pursuant to such Servicer's Servicing Agreement, provided such
      expenses are "unanticipated" within the meaning of the REMIC Provisions;

            (vi) to pay to the Depositor or other purchaser with respect to each
      Mortgage Loan or property acquired in respect thereof that has been
      repurchased or replaced pursuant to Section 2.02, 2.03, 3.08 or 9.01 or
      auctioned pursuant to Section 3.08, all amounts received thereon and not
      required to be distributed as of the date on which the related repurchase
      or purchase price or Scheduled Principal Balance was determined;

            (vii) to remit funds to the Paying Agent in the amounts and in the
      manner provided for herein;

            (viii) to pay to the Master Servicer any interest earned on or
      investment income with respect to funds in the Certificate Account;

            (ix) to pay to the Master Servicer or any Servicer out of
      Liquidation Proceeds allocable to interest the amount of any unpaid Master
      Servicing Fee or Servicing Fee (as adjusted pursuant to the related
      Servicing Agreement) and any unpaid assumption fees, late payment charges
      or other Mortgagor charges on the related Mortgage Loan;

            (x) to pay to the Master Servicer as additional master servicing
      compensation any Liquidation Profits which a Servicer is not entitled to
      pursuant to the applicable Servicing Agreement;

            (xi) to withdraw from the Certificate Account any amount deposited
      in the Certificate Account that was not required to be deposited therein;
      and

            (xii) to clear and terminate the Certificate Account pursuant to
      Section 9.01.

            (b) The Master Servicer shall keep and maintain separate accounting,
on a Mortgage Loan by Mortgage Loan basis, for the purpose of justifying any
payment to and withdrawal from the Certificate Account. The Master Servicer
shall notify the Depositor and the Trustee of the amount, purpose and party paid
pursuant to Section 3.02(a)(v).

            Section 3.03 Advances by Master Servicer and Trustee.

            (a) In the event an Other Servicer fails to make any required
Periodic Advances of principal and interest on a Mortgage Loan as required by
the related Other Servicing Agreement prior to the Business Day preceding the
Distribution Date occurring in the month during which such Periodic Advance is
due, the Master Servicer shall make Periodic Advances to the extent provided
hereby. In the event Wells Fargo Bank in its capacity as Servicer fails to make
any required Periodic Advances of principal and interest on a Mortgage Loan as
required by the Wells Fargo Bank Servicing Agreement prior to the Business Day
preceding the Distribution Date occurring in the month during which such
Periodic Advance is due, the Trustee shall, to the extent required by Section
8.14, make such Periodic Advance to the extent provided hereby, provided that
the Trustee has previously received the certificate of the Master Servicer
described in the following sentence. The Master Servicer shall certify to the
Trustee with respect to any such Distribution Date (i) the amount of Periodic
Advances required of Wells Fargo Bank in its capacity as Servicer or such Other
Servicer, as the case may be, (ii) the amount actually advanced by Wells Fargo
Bank in its capacity as Servicer or such Other Servicer, (iii) the amount that
the Trustee or Master Servicer is required to advance hereunder and (iv) whether
the Master Servicer has determined that it reasonably believes that such
Periodic Advance is a Nonrecoverable Advance. Amounts advanced by the Trustee or
Master Servicer shall be deposited in the Certificate Account on the Business
Day preceding the related Distribution Date. Notwithstanding the foregoing,
neither the Master Servicer nor the Trustee will be obligated to make a Periodic
Advance that it reasonably believes to be a Nonrecoverable Advance. The Trustee
may conclusively rely for any determination to be made by it hereunder upon the
determination of the Master Servicer as set forth in its certificate.

            (b) To the extent an Other Servicer fails to make an advance on
account of the taxes or insurance premiums with respect to a Mortgage Loan
required pursuant to the related Other Servicing Agreement, the Master Servicer
shall, if the Master Servicer has actual knowledge of such failure of the
Servicer, advance such funds and take such steps as are necessary to pay such
taxes or insurance premiums. To the extent Wells Fargo Bank in its capacity as
Servicer fails to make an advance on account of the taxes or insurance premiums
with respect to a Mortgage Loan required pursuant to the Wells Fargo Bank
Servicing Agreement, the Master Servicer shall, if the Master Servicer knows of
such failure of Wells Fargo Bank in its capacity as Servicer, certify to the
Trustee that such failure has occurred. Upon receipt of such certification, the
Trustee shall advance such funds and take such steps as are necessary to pay
such taxes or insurance premiums.

            (c) The Master Servicer and the Trustee shall each be entitled to be
reimbursed from the Certificate Account for any Periodic Advance made by it
under Section 3.03(a) to the extent described in Section 3.02(a)(i) and (a)
(ii). The Master Servicer and the Trustee shall be entitled to be reimbursed
pursuant to Section 3.02(a)(v) for any advance by it pursuant to Section
3.03(b). The Master Servicer shall diligently pursue restoration of such amount
to the Certificate Account from the related Servicer. The Master Servicer shall,
to the extent it has not already done so, upon the request of the Trustee,
withdraw from the Certificate Account and remit to the Trustee any amounts to
which the Trustee is entitled as reimbursement pursuant to Section 3.02 (a)(i),
(ii) and (v).

               (d) Except as provided in Section 3.03(a) and (b), neither the
Master Servicer nor the Trustee shall be required to pay or advance any amount
which any Servicer was required, but failed, to deposit in the Certificate
Account.

            Section 3.04 Custodian to Cooperate; Release of Owner Mortgage Loan
Files and Retained Mortgage Loan Files.

            In connection with the deposit by a Servicer into the Certificate
Account of the proceeds from a Liquidated Loan or of a Prepayment in Full, the
Master Servicer or applicable Servicer shall confirm that all amounts required
to be remitted to the Certificate Account in connection with such Mortgage Loan
have been so deposited, and the Master Servicer or applicable Servicer shall
deliver two copies of any related Request for Release to the Custodian. The
Custodian shall, within five Business Days of its receipt of such a Request for
Release, release the related Owner Mortgage Loan File (and Retained Mortgage
Loan File, if applicable) to the Master Servicer or such Servicer, as requested
by the Master Servicer or such Servicer. No expenses incurred in connection with
any instrument of satisfaction or deed of reconveyance shall be chargeable to
the Certificate Account.

            From time to time and as appropriate for the servicing or
foreclosure of any Mortgage Loan, including but not limited to, collection under
any insurance policies, or to effect a partial release of any Mortgaged Property
from the lien of the Mortgage, the Servicer of such Mortgage Loan shall deliver
to the Master Servicer or Custodian two copies of a Request for Release. Upon
the Master Servicer's receipt of any such Request for Release, the Master
Servicer shall promptly forward such request in hard copy or in electronic
format acceptable to the Custodian. The Custodian shall, within five Business
Days, release the related Owner Mortgage Loan File (and Retained Mortgage Loan
File, if applicable) to the Master Servicer or such Servicer. Any such Request
for Release shall obligate the Master Servicer or such Servicer, as the case may
be, to return the Owner Mortgage Loan File (and Retained Mortgage Loan File, if
applicable) to the Custodian by the sixtieth day following the release thereof,
unless (i) the Mortgage Loan has been liquidated and the Liquidation Proceeds
relating to the Mortgage Loan have been deposited in the Certificate Account or
(ii) the Owner Mortgage Loan File (and Retained Mortgage Loan File, if
applicable) or such document has been delivered to an attorney, or to a public
trustee or other public official as required by law, for purposes of initiating
or pursuing legal action or other proceedings for the foreclosure of the
Mortgaged Property either judicially or non-judicially. Upon receipt of two
copies of a Request for Release stating that such Mortgage Loan was liquidated
and that all amounts received or to be received in connection with such
liquidation which are required to be deposited into the Certificate Account have
been so deposited, or that such Mortgage Loan has become an REO Mortgage Loan,
the Custodian shall amend its records.

            Upon the occurrence of the event specified in clause (ii) of the
preceding paragraph, the Trustee shall execute and deliver to the Master
Servicer or such Servicer, as directed by the Master Servicer, court pleadings,
requests for trustee's sale or other documents necessary to the foreclosure or
trustee's sale in respect of a Mortgaged Property or to any legal action brought
to obtain judgment against any Mortgagor on the Mortgage Note or Mortgage or to
obtain a deficiency judgment, or to enforce any other remedies or rights
provided by the Mortgage Note or Mortgage or otherwise available at law or in
equity. Each such certification shall include a request that such pleadings or
documents be executed by the Trustee and a statement as to the reason such
documents or pleadings are required and that the execution and delivery thereof
by the Trustee will not invalidate or otherwise affect the lien of the Mortgage,
except for the termination of such a lien upon completion of the foreclosure
proceeding or trustee's sale.

            Section 3.05 Annual Compliance Statements.

            The Master Servicer shall deliver in electronic form, or otherwise
make available to the Depositor and the Trustee, and the Master Servicer shall
cause each Additional Master Servicer engaged by it and each Servicer to
deliver, in electronic form, or otherwise make available, to the Master
Servicer, the Trustee and each Rating Agency on or before March 5 of each year
or if such day is not a Business Day, the next Business Day (with a 10 calendar
day cure period, but in no event later than March 15), commencing in March 2007,
a copy of a certificate (followed by a hard copy to the party or parties
receiving such certificate within 10 calendar days) in the form required by Item
1123 of Regulation AB, to the effect that (i) an authorized officer of the
Master Servicer, the Additional Master Servicer or the Servicer, as the case may
be, has reviewed (or a review has been made under his or her supervision of)
such party's activities under this Agreement or the applicable Servicing
Agreement, in the case of a Servicer, or such other applicable agreement in the
case of an Additional Master Servicer, during the prior calendar year or portion
thereof and (ii) to the best of such officer's knowledge, based on such review,
such party has fulfilled all of its obligations under this Agreement or the
applicable Servicing Agreement, in the case of a Servicer, or such other
applicable agreement in the case of an Additional Master Servicer, in all
material respects throughout the prior calendar year or portion thereof or, if
there has been a failure to fulfill any such obligation in any material respect,
specifying each such failure known to such officer and the nature and status
thereof. If any of the certificates delivered pursuant to this Section 3.05
disclose that there has been a failure to fulfill any obligation in any material
respect then the Master Servicer shall promptly notify the Depositor and forward
a copy of such certificate to the Depositor, and the Depositor shall review such
certificate and, if applicable, consult with the Master Servicer as to the
nature of any failure to fulfill any obligation under this Agreement or the
applicable Servicing Agreement, in the case of a Servicer, or such other
applicable agreement in the case of an Additional Master Servicer, in any
material respect.

            Section 3.06 Title, Management and Disposition of Any REO Mortgage
Loan.

            The Master Servicer shall enforce the obligations of the applicable
Servicer to administer each REO Mortgage Loan at all times so that each REO
Mortgage Loan qualifies as "foreclosure property" under the REMIC Provisions and
that it does not earn any "net income from foreclosure property" which is
subject to tax under the REMIC Provisions. In the event that a Servicer is
unable to dispose of any REO Mortgage Loan within the period mandated by each of
the Servicing Agreements, the Master Servicer shall monitor such Servicer to
verify that such REO Mortgage Loan is auctioned to the highest bidder within the
period so specified. In the event of any such sale of a REO Mortgage Loan, the
Custodian shall, at the written request of the Master Servicer and upon being
supported with appropriate forms therefor, within five Business Days of the
deposit by the Master Servicer of the proceeds of such sale or auction into the
Certificate Account, release or cause to be released to the entity identified by
the Master Servicer the related Owner Mortgage Loan File, Retained Mortgage Loan
File, if applicable, and Servicer Mortgage Loan File and shall execute and
deliver such instruments of transfer or assignment, in each case without
recourse, as shall be necess