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POOLING AND SERVICING AGREEMENT

Pooling and Servicing Agreement

POOLING AND SERVICING AGREEMENT | Document Parties: BANK OF NEW YORK | COUNTRYWIDE GP, INC | COUNTRYWIDE HOME LOANS SERVICING LP | COUNTRYWIDE HOME LOANS, INC | CWALT, INC | PARK GRANADA LLC | PARK MONACO INC | PARK SIENNA LLC You are currently viewing:
This Pooling and Servicing Agreement involves

BANK OF NEW YORK | COUNTRYWIDE GP, INC | COUNTRYWIDE HOME LOANS SERVICING LP | COUNTRYWIDE HOME LOANS, INC | CWALT, INC | PARK GRANADA LLC | PARK MONACO INC | PARK SIENNA LLC

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Title: POOLING AND SERVICING AGREEMENT
Governing Law: New York     Date: 12/15/2006

POOLING AND SERVICING AGREEMENT, Parties: bank of new york , countrywide gp  inc , countrywide home loans servicing lp , countrywide home loans  inc , cwalt  inc , park granada llc , park monaco inc , park sienna llc
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                                  EXHIBIT 99.1
                                  ------------

                       The Pooling and Servicing Agreement



<PAGE>

                                                                  EXECUTION COPY


                            ===========================



                                  CWALT, INC.,
                                    Depositor
                          COUNTRYWIDE HOME LOANS, INC.,
                                     Seller
                                 PARK GRANADA LLC,
                                     Seller
                                PARK MONACO INC.,
                                     Seller
                                PARK SIENNA LLC,
                                      Seller
                      COUNTRYWIDE HOME LOANS SERVICING LP,
                                 Master Servicer
                                       and
                              THE BANK OF NEW YORK,
                                     Trustee
                       -----------------------------------

                        POOLING AND SERVICING AGREEMENT
                          Dated as of November 1, 2006

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

                         ALTERNATIVE LOAN TRUST 2006-OC10


              MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2006-OC10



                           ===========================
<PAGE>

<TABLE>
<CAPTION>
                                             TABLE OF CONTENTS

                                                                                                        Page
                                                                                                       ----
                                            ARTICLE I DEFINITIONS

<S>                    <C>                                                                               <C>
SECTION 1.01.          Defined Terms.....................................................................12
SECTION 1.02.           Certain Interpretive Provisions...................................................50

                  ARTICLE II CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES

SECTION 2.01.          Conveyance of Mortgage Loans......................................................51
SECTION 2.02.          Acceptance by Trustee of the Mortgage Loans.......................................57
SECTION 2.03.          Representations, Warranties and Covenants of the Sellers and Master Servicer......61
SECTION 2.04.          Representations and Warranties of the Depositor as to the Mortgage Loans..........64
SECTION 2.05.          Delivery of Opinion of Counsel in Connection with Substitutions...................64
SECTION 2.06.          Execution and Delivery of Certificates............................................65
SECTION 2.07.          REMIC Matters.....................................................................65
SECTION 2.08.          Covenants of the Master Servicer..................................................65

                         ARTICLE III ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

SECTION 3.01.          Master Servicer to Service Mortgage Loans.........................................66
SECTION 3.02.          Subservicing; Enforcement of the Obligations of Subservicers......................67
SECTION 3.03.          Rights of the Depositor, the NIM Insurer and the Trustee in Respect of the Master
                      Servicer..........................................................................67
SECTION 3.04.          Trustee to Act as Master Servicer.................................................68
SECTION 3.05.          Collection of Mortgage Loan Payments; Certificate Account; Distribution Account;
                      Carryover Reserve Fund; Principal Reserve Fund; the Pre-funding Account; the
                      Capitalized Interest Account......................................................68
SECTION 3.06.          Collection of Taxes, Assessments and Similar Items; Escrow Accounts...............73
SECTION 3.07.          Access to Certain Documentation and Information Regarding the Mortgage Loans......73
SECTION 3.08.          Permitted Withdrawals from the Certificate Account, the Distribution Account, the
                      Carryover Reserve Fund and the Principal Reserve Fund.............................74
SECTION 3.09.          Maintenance of Hazard Insurance; Maintenance of Primary Insurance Policies........76
SECTION 3.10.          Enforcement of Due-on-Sale Clauses; Assumption Agreements.........................77
SECTION 3.11.          Realization Upon Defaulted Mortgage Loans; Repurchase of Certain Mortgage Loans...78
SECTION 3.12.          Trustee to Cooperate; Release of Mortgage Files...................................82
SECTION 3.13.          Documents, Records and Funds in Possession of Master Servicer to be Held for the
                      Trustee...........................................................................83

                                                      i
<PAGE>

SECTION 3.14.          Servicing Compensation............................................................83
SECTION 3.15.          Access to Certain Documentation...................................................84
SECTION 3.16.          Annual Statement as to Compliance.................................................84
SECTION 3.17.          Errors and Omissions Insurance; Fidelity Bonds....................................84
SECTION 3.18.          Notification of Adjustments.......................................................85
SECTION 3.19.          The Swap Contract.................................................................85
SECTION 3.20.          Prepayment Charges................................................................87

                        ARTICLE IV DISTRIBUTIONS AND ADVANCES BY THE MASTER SERVICER

SECTION 4.01.          Advances..........................................................................89
SECTION 4.02.          Priorities of Distribution........................................................90
SECTION 4.03.          [Reserved]........................................................................95
SECTION 4.04.          [Reserved]........................................................................95
SECTION 4.05.          [Reserved]........................................................................95
SECTION 4.06.          Monthly Statements to Certificateholders..........................................95
SECTION 4.07.          Determination of Pass-Through Rates for COFI Certificates.........................96
SECTION 4.08.          Determination of Pass-Through Rates for LIBOR Certificates........................97
SECTION 4.09.          Swap Trust and Swap Account.......................................................98

                                         ARTICLE V THE CERTIFICATES

SECTION 5.01.          The Certificates.................................................................100
SECTION 5.02.          Certificate Register; Registration of Transfer and Exchange of Certificates......101
SECTION 5.03.          Mutilated, Destroyed, Lost or Stolen Certificates................................106
SECTION 5.04.          Persons Deemed Owners............................................................106
SECTION 5.05.          Access to List of Certificateholders' Names and Addresses........................106
SECTION 5.06.          Maintenance of Office or Agency..................................................107

                               ARTICLE VI THE DEPOSITOR AND THE MASTER SERVICER

SECTION 6.01.          Respective Liabilities of the Depositor and the Master Servicer..................108
SECTION 6.02.          Merger or Consolidation of the Depositor or the Master Servicer..................108
SECTION 6.03.          Limitation on Liability of the Depositor, the Sellers, the Master Servicer, the
                      NIM Insurer and Others...........................................................108
SECTION 6.04.          Limitation on Resignation of Master Servicer.....................................109

                                            ARTICLE VII DEFAULT

SECTION 7.01.          Events of Default................................................................110
SECTION 7.02.          Trustee to Act; Appointment of Successor.........................................112
SECTION 7.03.          Notification to Certificateholders...............................................113

                                    ARTICLE VIII CONCERNING THE TRUSTEE

SECTION 8.01.          Duties of Trustee................................................................114
SECTION 8.02.          Certain Matters Affecting the Trustee............................................115

                                                     ii

<PAGE>

SECTION 8.03.          Trustee Not Liable for Certificates or Mortgage Loans............................116
SECTION 8.04.          Trustee May Own Certificates.....................................................116
SECTION 8.05.          Trustee's Fees and Expenses......................................................116
SECTION 8.06.          Eligibility Requirements for Trustee.............................................117
SECTION 8.07.          Resignation and Removal of Trustee...............................................117
SECTION 8.08.          Successor Trustee................................................................118
SECTION 8.09.          Merger or Consolidation of Trustee...............................................119
SECTION 8.10.          Appointment of Co-Trustee or Separate Trustee....................................119
SECTION 8.11.          Tax Matters......................................................................121
SECTION 8.12.           Monitoring of Significance Percentage............................................123

                                           ARTICLE IX TERMINATION

SECTION 9.01.          Termination upon Liquidation or Purchase of all Mortgage Loans...................125
SECTION 9.02.          Final Distribution on the Certificates...........................................125
SECTION 9.03.          Additional Termination Requirements..............................................127
SECTION 9.04.          Auction of the Mortgage Loans and REO Properties.................................128

                                     ARTICLE X MISCELLANEOUS PROVISIONS

SECTION 10.01.         Amendment........................................................................132
SECTION 10.02.         Recordation of Agreement; Counterparts...........................................133
SECTION 10.03.         Governing Law....................................................................134
SECTION 10.04.         Intention of Parties.............................................................134
SECTION 10.05.         Notices..........................................................................135
SECTION 10.06.         Severability of Provisions.......................................................137
SECTION 10.07.         Assignment.......................................................................137
SECTION 10.08.         Limitation on Rights of Certificateholders.......................................137
SECTION 10.09.         Inspection and Audit Rights......................................................138
SECTION 10.10.         Certificates Nonassessable and Fully Paid........................................138
SECTION 10.11.         [Reserved].......................................................................138
SECTION 10.12.         Protection of Assets.............................................................138
SECTION 10.13.         Rights of NIM Insurer............................................................138

                                     ARTICLE XI EXCHANGE ACT REPORTING

SECTION 11.01.         Filing Obligations...............................................................139
SECTION 11.02.         Form 10-D Filings................................................................140
SECTION 11.03.         Form 8-K Filings.................................................................141
SECTION 11.04.         Form 10-K Filings................................................................141
SECTION 11.05.         Sarbanes-Oxley Certification.....................................................142
SECTION 11.06.         Form 15 Filing...................................................................142
SECTION 11.07.         Report on Assessment of Compliance and Attestation...............................142
SECTION 11.08.         Use of Subservicers and Subcontractors...........................................144
SECTION 11.09.         Amendments.......................................................................145
SECTION 11.10.         Reconciliation of Accounts.......................................................145

                                                    iii
<PAGE>

                                                 SCHEDULES

Schedule I:            Mortgage Loan Schedule.............................................................S-I-1
Schedule II-A:         Representations and Warranties of Countrywide...................................S-II-A-1
Schedule II-B:         Representations and Warranties of Park Granada..................................S-II-B-1
Schedule II-C:         Representations and Warranties of Park Monaco...................................S-II-C-1
Schedule III-A:        Representations and Warranties of Countrywide as to all of the
                      Mortgage Loans.................................................................S-III-A-1
Schedule III-B:        Representations and Warranties of Countrywide as to the Countrywide
                      Mortgage Loans.................................................................S-III-B-1
Schedule III-C:        Representations and Warranties of Park Granada as to the Park Granada
                      Mortgage Loans.................................................................S-III-C-1
Schedule III-D:        Representations and Warranties of Park Monaco as to the Park Monaco
                      Mortgage Loans.................................................................S-III-D-1
Schedule III-E:        Representations and Warranties of Park Sienna as to the Park Sienna
                      Mortgage Loans.................................................................S-III-E-1
Schedule IV:           Representations and Warranties of the Master Servicer.............................S-IV-1
Schedule V:            Principal Balance Schedules [if applicable]........................................S-V-1
Schedule VI:           Form of Monthly Master Servicer Report............................................S-VI-1
Schedule VII:          Prepayment Charge Schedule.......................................................S-VII-1

                                    EXHIBITS

Exhibit A:             Form of Senior Certificate (excluding Notional Amount Certificates)..................A-1
Exhibit B:              Form of Subordinated Certificate.....................................................B-1
Exhibit C-1:           Form of Class A-R Certificate......................................................C-1-1
Exhibit C-2:           Form of Class P Certificate........................................................C-2-1
Exhibit C-3            Form of Class C Certificate........................................................C-3-1
Exhibit D:             Form of Notional Amount Certificate..................................................D-1
Exhibit E:             Form of Reverse of Certificates......................................................E-1
Exhibit F-1:           Form of Initial Certification of Trustee (Initial Mortgage Loans)..................F-1-1
Exhibit F-2:           Form of Initial Certification of Trustee (Supplemental
                      Mortgage Loans)....................................................................F-2-1
Exhibit G-1:           Form of Delay Delivery Certification of Trustee (Initial
                      Mortgage Loans)....................................................................G-1-1
Exhibit G-2:           Form of Delay Delivery Certification of Trustee (Supplemental
                      Mortgage Loans)....................................................................G-2-1
Exhibit H-1:           Form of Final Certification of Trustee (Initial Mortgage Loans)....................H-1-1
Exhibit H-2:           Form of Final Certification of Trustee (Supplemental
                       Mortgage Loans)....................................................................H-2-1
Exhibit I:             Form of Transfer Affidavit...........................................................I-1
Exhibit J-1:           Form of Transferor Certificate (Residual)..........................................J-1-1
Exhibit J-2:           Form of Transferor Certificate (Private)...........................................J-2-1
Exhibit K:             Form of Investment Letter [Non-Rule 144A]............................................K-1
Exhibit L-1:           Form of Rule 144A Letter...........................................................L-1-1
Exhibit L-2:           Form ERISA Letter (Covered Certificates)...........................................L-2-1

                                                     iv
<PAGE>

Exhibit M:             Form of Request for Release (for Trustee)............................................M-1
Exhibit N:             Form of Request for Release of Documents (Mortgage Loan - Paid
                      in Full, Repurchased and Replaced)...................................................N-1
Exhibit O:             [Reserved]...........................................................................O-1
Exhibit P:             Form of Supplemental Transfer Agreement..............................................P-1
Exhibit Q:             Standard & Poor's LEVELS(R) Version 5.7 Glossary Revised,
                      Appendix E...........................................................................Q-1
Exhibit R:             Form of Swap Contract................................................................R-1
Exhibit S-1:           Form of Swap Contract Assignment Agreement.........................................S-1-1
Exhibit S-2:            Form of Swap Contract Administration Agreement.....................................S-2-1
Exhibit T:             Form of Officer's Certificate with respect to Prepayments............................T-1
Exhibit U:             Monthly Statement....................................................................U-1
Exhibit V-1:           Form of Performance Certification (Subservicer)....................................V-1-1
Exhibit V-2:           Form of Performance Certification (Trustee)........................................V-2-1
Exhibit W:             Form of Servicing Criteria to be Addressed in Assessment of Compliance
                      Statement............................................................................W-1
Exhibit X:             List of Item 1119 Parties............................................................X-1
Exhibit Y:             Form of Sarbanes-Oxley Certification (Replacement Master Servicer)...................Y-1

                                                     v
</TABLE>

<PAGE>

      THIS POOLING AND SERVICING AGREEMENT, dated as of November 1, 2006, among
CWALT, INC., a Delaware corporation, as depositor (the "Depositor"), COUNTRYWIDE
HOME LOANS, INC. ("Countrywide"), a New York corporation, as a seller (a
"Seller"), PARK GRANADA LLC ("Park Granada"), a Delaware limited liability
company, as a seller (a "Seller"), PARK MONACO INC. ("Park Monaco"), a Delaware
corporation, as a seller (a "Seller"), PARK SIENNA LLC ("Park Sienna"), a
Delaware limited liability company, as a seller (a "Seller"), COUNTRYWIDE HOME
LOANS SERVICING LP, a Texas limited partnership, as master servicer (the "Master
Servicer"), and THE BANK OF NEW YORK, a banking corporation organized under the
laws of the State of New York, as trustee (the "Trustee").

                                 WITNESSETH THAT

      In consideration of the mutual agreements contained in this Agreement, the
parties to this Agreement agree as follows:

                              PRELIMINARY STATEMENT

      The Depositor is the owner of the Trust Fund that is hereby conveyed to
the Trustee in return for the Certificates. The Trust Fund (excluding the
Pre-funding Account, the Capitalized Interest Account and the Carryover Reserve
Fund) for federal income tax purposes will consist of three REMICs (the "Swap-IO
REMIC," the " Strip REMIC" and the "Master REMIC"). Each Certificate, other than
the Class A-R Certificate, will represent ownership of one or more regular
interests in the Master REMIC for purposes of the REMIC Provisions. The Class
A-R Certificate will represent ownership of the sole class of residual interest
in each of the Swap-IO REMIC, the Strip REMIC and the Master REMIC. The Master
REMIC will hold as assets the several classes of uncertificated Strip REMIC
Interests (other than the STR-A-R Interest). Each Strip REMIC Interest (other
than the STR-A-R Interest) is hereby designated as a regular interest in the
Strip REMIC. The Strip REMIC will hold as assets the several classes of
uncertificated Swap-IO REMIC Interests (other than the SWR-A-R Interest). Each
Swap-IO REMIC Interest (other than the SWR-A-R Interest) is hereby designated as
a regular interest in the Swap-IO REMIC. The Swap-IO REMIC will hold as assets
all property of the Trust Fund (excluding the Pre-funding Account, the
Capitalized Interest Account and the Carryover Reserve Fund). The latest
possible maturity date of all REMIC regular interests created in this Agreement
shall be the Latest Possible Maturity Date.

      The Swap Trust, the Swap Contract and the Swap Account will not constitute
any part of any REMIC.

<PAGE>

SWAP-IO REMIC:

      The Swap-IO REMIC Interests will have the principal balances and
pass-through rates as set forth below:

SWAP-IO REMIC Interests       Initial Principal Balance(1)       Pass-Through Rate
-----------------------       ----------------------------       -----------------
SWR-1A                             $     2,819,054.15                   (2)
SWR-1B                             $     2,819,054.15                   (3)
SWR-2A                             $     3,159,887.67                   (2)
SWR-2B                             $     3,159,887.67                   (3)
SWR-3A                             $     3,494,814.73                   (2)
SWR-3B                             $     3,494,814.73                   (3)
SWR-4A                             $     3,778,807.75                   (2)
SWR-4B                             $     3,778,807.75                   (3)
SWR-5A                             $     3,771,999.94                   (2)
SWR-5B                             $     3,771,999.94                   (3)
SWR-6A                             $     4,094,118.63                   (2)
SWR-6B                             $     4,094,118.63                   (3)
SWR-7A                             $     4,406,637.77                   (2)
SWR-7B                             $     4,406,637.77                   (3)
SWR-8A                             $     4,708,295.81                   (2)
SWR-8B                             $     4,708,295.81                   (3)
SWR-9A                             $     4,997,864.85                   (2)
SWR-9B                             $     4,997,864.85                   (3)
SWR-10A                            $     5,274,159.69                   (2)
SWR-10B                            $     5,274,159.69                   (3)
SWR-11A                            $     5,534,651.06                   (2)
SWR-11B                            $     5,534,651.06                   (3)
SWR-12A                            $     5,660,648.81                   (2)
SWR-12B                            $     5,660,648.81                   (3)
SWR-13A                            $     5,778,351.38                   (2)
SWR-13B                            $     5,778,351.38                   (3)
SWR-14A                            $     5,887,226.93                   (2)
SWR-14B                            $     5,887,226.93                   (3)
SWR-15A                            $     5,986,764.58                   (2)
SWR-15B                            $     5,986,764.58                   (3)
SWR-16A                             $     6,076,496.69                   (2)
SWR-16B                            $     6,076,496.69                   (3)
SWR-17A                            $     6,156,001.33                   (2)
SWR-17B                            $     6,156,001.33                   (3)
SWR-18A                            $     6,224,904.82                   (2)
SWR-18B                            $     6,224,904.82                   (3)
SWR-19A                            $     6,194,001.98                   (2)
SWR-19B                             $     6,194,001.98                   (3)
SWR-20A                            $     6,158,195.07                   (2)
SWR-20B                            $     6,158,195.07                   (3)
SWR-21A                            $     6,116,663.44                   (2)

                                       2
<PAGE>

SWAP-IO REMIC Interests       Initial Principal Balance(1)       Pass-Through Rate
-----------------------       ----------------------------       -----------------
SWR-21B                             $     6,116,663.44                   (3)
SWR-22A                            $     5,937,755.73                   (2)
SWR-22B                            $     5,937,755.73                   (3)
SWR-23A                            $     8,392,426.49                    (2)
SWR-23B                            $     8,392,426.49                   (3)
SWR-24A                            $     8,001,998.53                   (2)
SWR-24B                            $     8,001,998.53                   (3)
SWR-25A                             $     7,630,904.30                   (2)
SWR-25B                            $     7,630,904.30                   (3)
SWR-26A                            $     7,278,145.26                   (2)
SWR-26B                            $     7,278,145.26                    (3)
SWR-27A                            $     6,942,776.44                   (2)
SWR-27B                            $     6,942,776.44                   (3)
SWR-28A                            $     6,623,902.84                   (2)
SWR-28B                             $     6,623,902.84                   (3)
SWR-29A                            $     4,837,558.73                   (2)
SWR-29B                            $     4,837,558.73                   (3)
SWR-30A                            $     4,682,152.03                    (2)
SWR-30B                            $     4,682,152.03                   (3)
SWR-31A                            $     4,531,756.23                   (2)
SWR-31B                            $     4,531,756.23                   (3)
SWR-32A                             $     4,386,209.03                   (2)
SWR-32B                            $     4,386,209.03                   (3)
SWR-33A                            $     4,245,354.31                   (2)
SWR-33B                            $     4,245,354.31                    (3)
SWR-34A                            $     4,255,095.20                   (2)
SWR-34B                            $     4,255,095.20                   (3)
SWR-35A                            $     4,399,691.01                   (2)
SWR-35B                             $     4,399,691.01                   (3)
SWR-36A                            $     4,235,932.55                   (2)
SWR-36B                            $     4,235,932.55                   (3)
SWR-37A                            $     4,078,647.66                    (2)
SWR-37B                            $     4,078,647.66                   (3)
SWR-38A                            $     3,927,562.71                   (2)
SWR-38B                            $     3,927,562.71                   (3)
SWR-39A                             $     3,782,416.41                   (2)
SWR-39B                            $     3,782,416.41                   (3)
SWR-40A                            $     3,561,187.57                   (2)
SWR-40B                            $     3,561,187.57                    (3)
SWR-41A                            $     3,264,202.84                   (2)
SWR-41B                            $     3,264,202.84                   (3)
SWR-42A                            $     3,157,461.76                   (2)
SWR-42B                             $     3,157,461.76                   (3)
SWR-43A                            $     3,054,221.66                   (2)

                                       3
<PAGE>

SWAP-IO REMIC Interests       Initial Principal Balance(1)       Pass-Through Rate
-----------------------       ----------------------------       -----------------
SWR-43B                            $     3,054,221.66                   (3)
SWR-44A                            $     2,954,367.28                   (2)
SWR-44B                             $     2,954,367.28                   (3)
SWR-45A                            $     2,857,787.16                   (2)
SWR-45B                            $     2,857,787.16                   (3)
SWR-46A                            $     2,763,566.43                   (2)
SWR-46B                            $     2,763,566.43                   (3)
SWR-47A                            $     2,672,030.78                   (2)
SWR-47B                            $     2,672,030.78                   (3)
SWR-48A                             $     2,584,768.58                   (2)
SWR-48B                            $     2,584,768.38                   (3)
SWR-49A                            $     2,500,364.38                   (2)
SWR-49B                            $     2,500,364.58                   (3)
SWR-50A                            $    69,268,251.48                   (2)
SWR-50B                            $    69,268,251.48                   (3)
SWR-Support                         (1)                                (5)
SWR-P                                       $   100.00                   (6)
SW-A-R                              (7)                                (7)

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

(1)    Scheduled principal, prepayments and Realized Losses will be allocated
      first, to the SWR-Support Interest and second, to the numbered classes
      sequentially (from lowest to highest). Amounts so allocated to a numbered
      class shall be further allocated among the "A" and "B" components of such
      numbered class pro-rata until the entire class is reduced to zero.

(2)    Prior to the 51st Distribution Date, a rate equal to twice the Pool Tax
      Cap less 10.00% per annum. On and after the 51st Distribution Date a rate
      equal to the Pool Tax Cap. The "Pool Tax Cap" means the weighted average
      of the Adjusted Net Mortgage Rates of all the Mortgage Loans.

(3)    Prior to the 51st Distribution Date, a rate equal to the lesser of (i)
      10.00% per annum and (ii) twice the Pool Tax Cap. On and after the 51st
      Distribution Date, a rate equal to the Pool Tax Cap.

(4)    On the Closing Date and on each Distribution Date, following the
      allocation of Principal Amounts and Realized Losses, the principal balance
      in respect of the SWR-Support Interest will equal the excess of (i) the
      sum of (A) the principal balance of the Mortgage Loans (as of the end of
      the Due Period, reduced by principal prepayments received after the Due
      Period that are to be distributed on the Distribution Date related to the
      Due Period) and (B) the amount (if any) in the Pre-Funding Account over
      (ii) the principal balance in respect of the remaining Swap-IO REMIC
      Interests other than the SWR-P and the SWR-A-R Interests.

(5)    A rate equal to the Pool Tax Cap.

(6)    On each Distribution Date the Class SWR-P Interest is entitled to all
      Prepayment Charges collected with respect to the Mortgage Loans. It pays
      no interest.

                                       4
<PAGE>

(7)    The Class SW-A-R Interest is the sole class of residual interest in the
      Swap-IO REMIC. It has no principal and pays no principal or interest.

      On each Distribution Date, the Available Funds shall be payable with
respect to the Swap-IO REMIC Interests in the following manner:

      (1) Interest. Interest is to be distributed with respect to each Swap-IO
REMIC Interest at the rate, or according to the formulas, described above.

      (2) Principal. Principal Distribution Amounts shall be allocated among the
Swap-IO REMIC Interests as described above.

      (3) Prepayment Penalties. All Prepayment Charges are allocated to the
SWR-P Interest.

STRIP REMIC:

      The Strip REMIC Regular Interests will have the principal balances,
pass-through rates and Corresponding Classes of Certificates as set forth in the
following table:

<TABLE>
<CAPTION>
------------------------------- ---------------------------- ------------------------- -------------------------------
                                                                   Pass-Through              Corresponding Class of
STRIP REMIC Interests             Initial Principal Balance              Rate                      Certificates
------------------------------- ---------------------------- ------------------------- -------------------------------
<S>                               <C>                                <C>                      <C>
STR-1-A                                      (1)                         (2)                        Class 1-A
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-2-A-1                                    (1)                         (2)                       Class 2-A-1
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-2-A-2A                                   (1)                         (2)                       Class 2-A-2A
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-2-A-2B                                   (1)                         (2)                       Class 2-A-2B
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-2-A-3                                     (1)                         (2)                       Class 2-A-3
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-1                                      (1)                          (2)                        Class M-1
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-2                                      (1)                         (2)                         Class M-2
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-3                                      (1)                         (2)                        Class M-3
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-4                                      (1)                         (2)                        Class M-4
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-5                                      (1)                         (2)                        Class M-5
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-6                                      (1)                         (2)                        Class M-6
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-7                                      (1)                         (2)                        Class M-7
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-M-8                                      (1)                         (2)                        Class M-8
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-$100                                         $100                     (3)                           A-R
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-C-OC                                     (4)                          (2)                           N/A
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-C-Swap-IO                                (5)                         (5)                           N/A
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-P                                           $100                     (6)                            P
------------------------------- ---------------------------- ------------------------- -------------------------------
STR-A-R                                      (7)                         (7)                           N/A
------------------------------- ---------------------------- ------------------------- -------------------------------
</TABLE>

(1) This Strip REMIC Interest has a principal balance that is initially equal to
100% of its corresponding Certificate Class issued by the Master REMIC.
Principal payments, both scheduled and prepaid, Realized Losses and Subsequent
Recoveries attributable to the SWAP-IO

                                       5
<PAGE>

REMIC Interests held by the Strip REMIC will be allocated to this class to
maintain its size relative to its corresponding Certificate Class.

(2) On each Distribution Date, the pass through rate will equal the "Strip REMIC
Cap." The Strip REMIC Cap will equal the weighted average of the pass through
rates of the Swap-IO REMIC Interests (other than the Class SWR-P and Class
SWR-A-R Interests) treating each "B" Interest the cardinal number of which (for
example, SWR-1B, SWR-2B, SWR-3B, etc.,) is not less than the ordinal number of
the Distribution Date (first Distribution Date, second Distribution Date, third
Distribution Date, etc., ) as capped at a rate equal to the product of (i) 2 and
(ii) LIBOR.

(3) This Strip REMIC Interest pays no interest.

(4) This Strip REMIC Interest has a principal balance that is initially equal to
100% of the Overcollateralized Amount. Principal payments, both scheduled and
prepaid, Realized Losses and Subsequent Recoveries attributable to the Swap-IO
REMIC Interests held by the Strip REMIC will be allocated to this class to
maintain its size relative to the Overcollateralized Amount.

(5) For each Distribution Date, the STR-C-Swap-IO Interest is entitled to
receive from each Swap REMIC "B" Interest the cardinal number of which (for
example, SWR-1B, SWR-2B, SWR-3B, etc.,) is not less than the ordinal number of
the Distribution Date (first Distribution Date, second Distribution Date, third
Distribution Date, etc.) the interest accruing on such interest in excess of a
per annum rate equal to the product of (i) 2 and (ii) LIBOR.

(6) The STR-P Interest is entitled to all amounts payable with respect to the
SWR-P Interest. It pays no interest.

(7) The STR-A-R Interest is the sole class of residual interest in the Strip
REMIC. It has no principal balance and pays no principal or interest.

      On each Distribution Date, the Interest Funds and the Principal
Distribution Amount payable with respect to the Swap-IO Interests shall be
payable with respect to the Strip REMIC Interests in the following manner:

      (1) Interest. Interest is to be distributed with respect to each Strip
REMIC Interest at the rate, or according to the formulas, described above.

(2) Principal. Principal Distribution Amounts shall be allocated among the Strip
REMIC Interests as described above.

(3) Prepayment Penalties. All Prepayment Charges are allocated to the STR-P
Interest.

Master REMIC:

      The Master REMIC Certificates will have the original certificate principal
balances and pass-through rates as set forth in the following table:

                                       6
<PAGE>

                                          Original Class
Class                                 Certificate Balance        Pass-Through Rate
-----                                 -------------------        -----------------
Class 1-A                                    $165,209,000                (1)
Class 2-A-1                                  $235,018,000                (1)
Class 2-A-2A                                 $266,090,000                (1)
Class 2-A-2B                                  $29,566,000                (1)
Class 2-A-3                                    $50,926,000                (1)
Class M-1                                     $17,781,000                (1)
Class M-2                                     $14,952,000                (1)
Class M-3                                      $4,849,000                 (1)
Class M-4                                      $4,849,000                (1)
Class M-5                                      $4,041,000                (1)
Class M-6                                      $4,041,000                (1)
Class M-7                                       $4,041,000                (1)
Class M-8                                      $4,041,000                (1)
Class C                                   (2)                            (3)
Class P                                              $100                (4)
Class A-R                                            $100                (5)

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

(1) The Certificates will accrue interest at the related Pass-Through Rates
identified in this Agreement. For federal income tax purposes, including the
computation of the Class C Distributable Amount and entitlement to Net Rate
Carryover the pass-through rate in respect of each Class 1 Certificate, Class 2
Certificate and Class M Certificate will be subject to a cap equal to the Strip
REMIC Cap rather than the Net Rate Cap.

(2) For federal income tax purposes, the Class C Certificates will be treated as
having a Certificate Principal Balance equal to the Overcollateralized Amount.

(3 For each Interest Accrual Period the Class C Certificates are entitled to an
amount (the "Class C Distributable Amount") equal to the sum of (a) the interest
payable on the STR-C-Swap-IO Interest, (b) the interest payable on the STR-C-OC
Interest and (c) a specified portion of the interest payable on the Strip REMIC
Regular Interests (other than the STR-$100, STR-C and STR-P Interests) equal to
the excess of the Pool Tax Cap over the weighted average interest rate of the
Strip REMIC Regular Interests (other than the STR-$100, STR-C and STR-P
Interests) with each such Class subject to a cap and a floor equal to the
Pass-Through Rate of the Corresponding Master REMIC Class. The Pass-Through Rate
of the Class C Certificates shall be a rate sufficient to entitle it to an
amount equal to all interest accrued on the Mortgage Loans less the interest
accrued on the other interests issued by the Master REMIC. The Class C
Distributable Amount for any Distribution Date is payable from current interest
on the Mortgage Loans and any Overcollateralization Reduction Amount for that
Distribution Date.

(4) For each Distribution Date the Class P Certificates are entitled to all
Prepayment Charges distributed with respect to the STR-P Interest.

(5) The Class A-R Certificates represent the sole class of residual interest in
each REMIC created hereunder. The Class A-R Certificates are not entitled to
distributions of interest.

                                       7
<PAGE>

      The foregoing REMIC structure is intended to cause all of the cash from
the Mortgage Loans to flow through to the Master REMIC as cash flow on REMIC
regular interests, without creating any shortfall--actual or potential (other
than for credit losses)-- to any REMIC regular interest. It is not intended that
the Class A-R Certificates be entitled to any cash flows pursuant to this
Agreement except as provided in Section 4.02(b) hereunder.

                                       8
<PAGE>

      Set forth below are designations of Classes or Components of Certificates
and other defined terms to the categories used in this Agreement:

<TABLE>
<CAPTION>
<S>                                          <C>
Accretion Directed
Certificates........................         None.

Accretion Directed
Components..........................         None.

Accrual Certificates................         None.

Accrual Components..................         None.

Book-Entry Certificates.............         All Classes of Certificates other than the Physical Certificates.

COFI Certificates...................         None.

Component Certificates..............         None.

Components..........................         For purposes of calculating distributions of principal and/or interest,
                                            the Component Certificates, if any, will be comprised of multiple payment
                                            components having the designations, Initial Component Balances or
                                            Notional Amounts, as applicable, and Pass-Through Rates set forth below:

                                                                               Initial Component
                                                      Designation              Principal Balance     Pass-Through Rate
                                                          N/A                          N/A                   N/A

Delay Certificates..................         All interest-bearing Classes of Certificates other than the Non-Delay
                                            Certificates, if any.

ERISA-Restricted
Certificates........................         The Residual Certificates and the Private Certificates; and any
                                            Certificate of a Class that does not have or no longer has a rating of at
                                            least BBB- or its equivalent from at least one Rating Agency.

Group 1 Certificates................         Group 1 Senior Certificates and the portions of the Subordinated
                                            Certificates related to Loan Group 1.

Group 1
Senior Certificates.................         The Class 1-A Certificates.

Group 2 Certificates........................Group 2 Senior Certificates and the portions of the Subordinated
                                            Certificates related to Loan Group 2.

                                        9
<PAGE>

Group 2
Senior Certificates.................         The Class 2-A-1, Class 2-A-2A, Class 2-A-2B and Class 2-A-3 Certificates.

Inverse Floating Rate
Certificates........................          None.

LIBOR Certificates..................         The Class 1-A, Class 2-A-1,   Class 2-A-2A,   Class 2-A-2B,   Class 2-A-3,
                                            Class M-1,   Class   M-2,   Class M-3,   Class M-4,   Class M-5,   Class M-6,
                                             Class M-7 and Class M-8 Certificates.

Non-Delay Certificates..............         The LIBOR Certificates.

Notional Amount
Certificates........................         None.

Offered Certificates................         All Classes of Certificates other than the Private Certificates.

Physical Certificates...............         The Private Certificates and the Residual Certificates.

Planned Principal Classes...........         None.

Planned Principal
Components..........................         None.

Principal Only Certificates.........         None.

Private Certificates................         The Class C and Class P Certificates.

Rating Agencies.....................         S&P and Moody's.

Regular Certificates................         All Classes of Certificates, other than the Residual Certificates.

Residual Certificates...............         The Class A-R Certificates.

Scheduled Principal
Classes.............................         None.

Senior Certificates.................         The Class 1-A, Class 2-A-1, Class 2-A-2A, Class 2-A-2B and Class
                                            2-A-3 Certificates.

Subordinated Certificates ..........         The Class M-1,   Class M-2,   Class M-3, Class M-4, Class M-5, Class M-6,
                                             Class M-7 and Class M-8 Certificates.

Targeted Principal
Classes.............................         None.

                                       10
<PAGE>

Underwriter.........................         Countrywide Securities Corporation.
</TABLE>

      With respect to any of the foregoing designations as to which the
corresponding reference is "None," all defined terms and provisions in this
Agreement relating solely to such designations shall be of no force or effect,
and any calculations in this Agreement incorporating references to such
designations shall be interpreted without reference to such designations and
amounts. Defined terms and provisions in this Agreement relating to statistical
rating agencies not designated above as Rating Agencies shall be of no force or
effect.

         If the sum of the aggregate Stated Principal Balances of the Initial
Mortgage Loans in Loan Group 1 and Loan Group 2 on the Closing Date is equal to
or greater than the sum of (x) the aggregate Class Certificate Balance of the
Offered Certificates, as of such date, and (y) the Overcollateralized Amount as
of the Closing Date, all references herein to "Aggregate Supplemental Purchase
Amount", "Aggregate Supplemental Transfer Amount", "Capitalized Interest
Account", "Capitalized Interest Requirement", "Funding Period", "Funding Period
Distribution Date", "Remaining Pre-funded Amount", "Pre-funded Amount",
"Supplemental Cut-off Date", "Pre-funding Account", "Supplemental Mortgage
Loan", "Supplemental Transfer Agreement" and "Supplemental Transfer Date" with
respect to that Loan Group shall be of no force or effect and all provisions
herein related thereto shall similarly be of no force or effect.

                                       11
<PAGE>


                                    ARTICLE I
                                   DEFINITIONS

      SECTION 1.01. Defined Terms.

      Whenever used in this Agreement, the following words and phrases, unless
the context otherwise requires, shall have the following meanings:

      40-Year Mortgage Loans: The Mortgage Loans that have original terms to
maturity of 40-years.

      Acceptable Bid Amount: Either (i) a bid equal to or greater than the
Minimum Auction Amount or (ii) the highest bid submitted by a Qualified Bidder
in an auction if the Directing Certificateholder agrees to pay the related
Auction Supplement Amount.

      Account: Any Escrow Account, the Certificate Account, the Distribution
Account, the Carryover Reserve Fund, the Principal Reserve Fund, the Pre-funding
Account, the Capitalized Interest Account, the Swap Account or any other account
related to the Trust Fund or the Mortgage Loans.

      Accretion Directed Classes: As specified in the Preliminary Statement.

      Additional Designated Information: As defined in Section 11.02.

      Adjusted Mortgage Rate: As to each Mortgage Loan, and at any time, the per
annum rate equal to the Mortgage Rate less the Master Servicing Fee Rate.

      Adjusted Net Mortgage Rate: As to each Mortgage Loan, and at any time, the
per annum rate equal to the Mortgage Rate less the related Expense Fee Rate.

      Adjustment Date: A date specified in each Mortgage Note as a date on which
the Mortgage Rate on the related Mortgage Loan will be adjusted.

      Advance: As to each Loan Group, the payment required to be made by the
Master Servicer with respect to any Distribution Date pursuant to Section 4.01,
the amount of any such payment being equal to the aggregate of payments of
principal and interest (net of the Master Servicing Fee) on the Mortgage Loans
in such Loan Group that were due on the related Due Date and not received by the
Master Servicer as of the close of business on the related Determination Date,
together with an amount equivalent to interest on each Mortgage Loan as to which
the related Mortgaged Property is an REO Property, net of any net income from
such REO Property, less the aggregate amount of any such delinquent payments
that the Master Servicer has determined would constitute a Nonrecoverable
Advance if advanced.

      Aggregate Supplemental Purchase Amount: With respect to any Supplemental
Transfer Date and Loan Group, the applicable "Aggregate Supplemental Purchase
Amount" identified in the related Supplemental Transfer Agreement for such Loan
Group, which shall be an estimate of the aggregate Stated Principal Balances of
the Supplemental Mortgage Loans to be included in such Loan Group identified in
such Supplemental Transfer Agreement.

                                        12
<PAGE>

      Aggregate Supplemental Transfer Amount: With respect to any Supplemental
Transfer Date and Loan Group, the aggregate Stated Principal Balance as of the
related Supplemental Cut-off Date of the Supplemental Mortgage Loans to be
included in such Loan Group conveyed on such Supplemental Transfer Date, as
listed on the revised Mortgage Loan Schedule delivered pursuant to Section
2.01(f); provided, however, that such amount shall not exceed the amount on
deposit in the Pre-funding Account allocated to purchasing Supplemental Mortgage
Loans for such Loan Group.

      Agreement: This Pooling and Servicing Agreement and all amendments or
supplements this Pooling and Servicing Agreement.

      Amount Held for Future Distribution: As to any Distribution Date and each
Loan Group, the aggregate amount held in the Certificate Account at the close of
business on the related Determination Date on account of (i) Principal
Prepayments received after the related Prepayment Period and Liquidation
Proceeds and Subsequent Recoveries received in the month of such Distribution
Date relating to such Loan Group and (ii) all Scheduled Payments relating to
such Loan Group due after the related Due Date.

      Applied Realized Loss Amount: With respect to any Distribution Date and
the LIBOR Certificates, the sum of the Realized Losses which are to be applied
in reduction of the Class Certificate Balances of any such Class of Certificates
pursuant to this Agreement, which, in the case of the Subordinated Certificates,
shall equal the amount, if any, by which the aggregate Class Certificate Balance
of all LIBOR Certificates (after all distributions of principal on such
Distribution Date) exceeds the sum of the aggregate Stated Principal Balance of
the Mortgage Loans and the amount on deposit in the Pre-funding Account as of
the Due Date in the month in which such Distribution Date occurs (after giving
effect to Principal Prepayments and Liquidation Proceeds allocated to principal
and Subsequent Recoveries received in the related Prepayment Period). With
respect to the Group 1 Senior Certificates and any Distribution Date on which
the aggregate Class Certificate Balance of the Subordinated Certificates and
Class C Certificates is equal to zero, the amount, if any, by which the Class
Certificate Balance of the Group 1 Senior Certificates (after all distributions
of principal on such Distribution Date) exceeds the aggregate Stated Principal
Balance of the Group 1 Mortgage Loans as of the Due Date in the month in which
such Distribution Date occurs (after giving effect to Principal Prepayments and
Liquidation Proceeds allocated to principal and Subsequent Recoveries received
in the related Prepayment Period). With respect to each Class of Group 2 Senior
Certificates and any Distribution Date on which the aggregate Class Certificate
Balance of the Subordinated Certificates and Class C Certificates is equal to
zero, the pro rata share (based on the Class Certificate Balance of each such
Class) of the amount, if any, by which the aggregate Class Certificate Balance
of the Group 2 Senior Certificates (after all distributions of principal on such
Distribution Date) exceeds the aggregate Stated Principal Balance of the Group 2
Mortgage Loans as of the Due Date in the month in which such Distribution Date
occurs (after giving effect to Principal Prepayments and Liquidation Proceeds
allocated to principal and Subsequent Recoveries received in the related
Prepayment Period).

      Appraised Value: With respect to any Mortgage Loan, the Appraised Value of
the related Mortgaged Property shall be: (i) with respect to a Mortgage Loan
other than a Refinancing Mortgage Loan, the lesser of (a) the value of the
Mortgaged Property based upon the appraisal made at the time of the origination
of such Mortgage Loan and (b) the sales price of

                                       13
<PAGE>

the Mortgaged Property at the time of the origination of such Mortgage Loan;
(ii) with respect to a Refinancing Mortgage Loan other than a Streamlined
Documentation Mortgage Loan, the value of the Mortgaged Property based upon the
appraisal made-at the time of the origination of such Refinancing Mortgage Loan;
and (iii) with respect to a Streamlined Documentation Mortgage Loan, (a) if the
loan-to-value ratio with respect to the Original Mortgage Loan at the time of
the origination thereof was 80% or less and the loan amount of the new mortgage
loan is $650,000 or less, the value of the Mortgaged Property based upon the
appraisal made at the time of the origination of the Original Mortgage Loan and
(b) if the loan-to-value ratio with respect to the Original Mortgage Loan at the
time of the origination thereof was greater than 80% or the loan amount of the
new mortgage loan being originated is greater than $650,000, the value of the
Mortgaged Property based upon the appraisal (which may be a drive-by appraisal)
made at the time of the origination of such Streamlined Documentation Mortgage
Loan.

      Auction Supplement Amount: As defined in Section 9.04(c).

      Bankruptcy Code: The United States Bankruptcy Reform Act of 1978, as
amended.

      Bid Determination Date: As defined in Section 9.04(b).

      Book-Entry Certificates: As specified in the Preliminary Statement.

      Business Day: Any day other than (i) a Saturday or a Sunday or (ii) a day
on which banking institutions in the City of New York, New York, or the States
of California or Texas or the city in which the Corporate Trust Office of the
Trustee is located are authorized or obligated by law or executive order to be
closed.

      Capitalized Interest Account: The separate Eligible Account designated as
such and created and maintained by the Trustee pursuant to Section 3.05(i)
hereof. The Capitalized Interest Account shall be treated as an "outside reserve
fund" under applicable Treasury regulations and shall not be part of the REMIC.
Except as provided in Section 3.05(i) hereof, any investment earnings on the
amounts on deposit in the Capitalized Interest Account shall be treated as owned
by the Depositor and will be taxable to the Depositor.

      Capitalized Interest Requirement: With respect to each Funding Period
Distribution Date and Loan Group, the excess, if any, of (a) the sum of (1)
Current Interest for each Class of related Certificates in the Certificate Group
related to such Loan Group for such Distribution Date, plus (2) the Trustee Fee,
over (b) with respect to each Mortgage Loan in the related Loan Group, (1) 1/12
of the product of the related Adjusted Mortgage Rate and the related Stated
Principal Balance as of the related Due Date (prior to giving effect to any
Scheduled Payment due on such Mortgage Loan on such Due Date). On the Closing
Date, the amount deposited in the Capitalized Interest Account shall be
$51,913.74.

      Carryover Reserve Fund: The separate Eligible Account created and
initially maintained by the Trustee pursuant to Section 3.05(g) in the name of
the Trustee for the benefit of the Holders of the Offered Certificates and
designated "The Bank of New York in trust for registered holders of CWALT, Inc.,
Alternative Loan Trust 2006-OC10, Mortgage Pass-Through Certificates, Series
2006-OC10." Funds in the Carryover Reserve Fund shall be held in trust for the
Holders of the Offered Certificates for the uses and purposes set forth in this
Agreement.

                                       14
<PAGE>

      Certificate: Any one of the Certificates executed by the Trustee in
substantially the forms attached this Agreement as exhibits.

      Certificate Account: The separate Eligible Account or Accounts created and
maintained by the Master Servicer pursuant to Section 3.05 with a depository
institution, initially Countrywide Bank, N.A., in the name of the Master
Servicer for the benefit of the Trustee on behalf of Certificateholders and
designated "Countrywide Home Loans Servicing LP in trust for the registered
holders of Alternative Loan Trust 2006-OC10, Mortgage Pass-Through Certificates
Series 2006-OC10."

      Certificate Balance: With respect to any Certificate (other than the Class
C Certificates) at any date, the maximum dollar amount of principal to which the
Holder thereof is then entitled under this Agreement, such amount being equal to
the Denomination of that Certificate (A) plus, with respect to the LIBOR
Certificates, any increase to the Certificate Balance of such Certificate
pursuant to Section 4.02 due to the receipt of Subsequent Recoveries and (B)
minus the sum of (i) all distributions of principal previously made with respect
to that Certificate and (ii) with respect to the LIBOR Certificates, any Applied
Realized Loss Amounts allocated to such Certificate on previous Distribution
Dates pursuant to Section 4.02 without duplication.

      Certificate Group: The Group 1 Certificates or the Group 2 Certificates,
as the context requires.

      Certificateholder or Holder: The person in whose name a Certificate is
registered in the Certificate Register, except that, solely for the purpose of
giving any consent pursuant to this Agreement, any Certificate registered in the
name of the Depositor or any affiliate of the Depositor shall be deemed not to
be Outstanding and the Percentage Interest evidenced thereby shall not be taken
into account in determining whether the requisite amount of Percentage Interests
necessary to effect such consent has been obtained; provided, however, that if
any such Person (including the Depositor) owns 100% of the Percentage Interests
evidenced by a Class of Certificates, such Certificates shall be deemed to be
Outstanding for purposes of any provision of this Agreement (other than the
second sentence of Section 10.01) that requires the consent of the Holders of
Certificates of a particular Class as a condition to the taking of any action
under this Agreement. The Trustee is entitled to rely conclusively on a
certification of the Depositor or any affiliate of the Depositor in determining
which Certificates are registered in the name of an affiliate of the Depositor.

      Certificate Owner: With respect to a Book-Entry Certificate, the Person
who is the beneficial owner of such Book-Entry Certificate. For the purposes of
this Agreement, in order for a Certificate Owner to enforce any of its rights
under this Agreement, it shall first have to provide evidence of its beneficial
ownership interest in a Certificate that is reasonably satisfactory to the
Trustee, the Depositor, and/or the Master Servicer, as applicable.

      Certificate Register: The register maintained pursuant to Section 5.02.

      Certification Party: As defined in Section 11.05.

      Certifying Person: As defined in Section 11.05.

                                       15
<PAGE>

      Class: All Certificates bearing the same class designation as set forth in
the Preliminary Statement.

      Class C Distributable Amount: As defined in the Preliminary Statement.

      Class Certificate Balance: With respect to any Class of Certificates other
than the Class C Certificates and as to any date of determination, the aggregate
of the Certificate Balances of all Certificates of such Class as of such date.
With respect to the Class C Certificates and any Distribution Date, the excess,
if any, of the aggregate Stated Principal Balance of the Mortgage Loans as of
the Due Date in the prior calendar month (after giving effect to Principal
Prepayments, the principal portion of any Liquidation Proceeds and any
Subsequent Recoveries received in the Prepayment Period related to that prior
Due Date) over the aggregate Class Certificate Balance of the Offered
Certificates and the Class P Certificates immediately prior to that Distribution
Date.

      Class P Certificate: Any Certificate designated as a "Class P Certificate"
on the face thereof, in the form of Exhibit C-2 hereto, representing the right
to distributions as set forth herein.

      Class P Principal Distribution Date: The first Distribution Date that
occurs after the end of the latest Prepayment Charge Period for all Mortgage
Loans that have a Prepayment Charge.

      Closing Date: November 30, 2006.

      Code: The Internal Revenue Code of 1986, including any successor or
amendatory provisions.

      COFI: The Monthly Weighted Average Cost of Funds Index for the Eleventh
District Savings Institutions published by the Federal Home Loan Bank of San
Francisco.

      COFI Certificates: As specified in the Preliminary Statement. Commission:
The U.S. Securities and Exchange Commission.

      Compensating Interest: As to any Distribution Date, an amount equal to the
product of 50% and the aggregate Master Servicing Fee payable to the Master
Servicer for that Distribution Date.

      Component: As specified in the Preliminary Statement.

      Component Balance: Not applicable.

      Component Certificates: As specified in the Preliminary Statement.

      Component Notional Amount: Not applicable.

      Coop Shares: Shares issued by a Cooperative Corporation.

                                       16
<PAGE>

      Cooperative Corporation: The entity that holds title (fee or an acceptable
leasehold estate) to the real property and improvements constituting the
Cooperative Property and which governs the Cooperative Property, which
Cooperative Corporation must qualify as a Cooperative Housing Corporation under
Section 216 of the Code.

      Cooperative Loan: Any Mortgage Loan secured by Coop Shares and a
Proprietary Lease.

      Cooperative Property: The real property and improvements owned by the
Cooperative Corporation, including the allocation of individual dwelling units
to the holders of the Coop Shares of the Cooperative Corporation.

      Cooperative Unit: A single family dwelling located in a Cooperative
Property.

      Corporate Trust Office: The designated office of the Trustee in the State
of New York at which at any particular time its corporate trust business with
respect to this Agreement shall be administered, which office at the date of the
execution of this Agreement is located at 101 Barclay Street, 8W, New York, New
York 10286 (Attn: Mortgage-Backed Securities Group, CWALT, Inc. Series
2006-OC10, facsimile no. (212) 815-3986), and which is the address to which
notices to and correspondence with the Trustee should be directed.

      Countrywide: Countrywide Home Loans, Inc., a New York corporation and its
successors and assigns, in its capacity as the seller of the Countrywide
Mortgage Loans to the Depositor.

      Countrywide Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule for which Countrywide is the applicable Seller.

      Countrywide Servicing: Countrywide Home Loans Servicing LP, a Texas
limited partnership and its successors and assigns.

      Covered Certificates: The LIBOR Certificates.

      Cumulative Loss Trigger Event: With respect to a Distribution Date on or
after the Stepdown Date, the aggregate amount of Realized Losses on the Mortgage
Loans from (and including) the Cut-off Date to (and including) the related Due
Date (reduced by the aggregate amount of Subsequent Recoveries received from the
Cut-off Date through the Prepayment Period related to that Due Date) exceeds the
applicable percentage, for such Distribution Date, of the sum of the Initial
Cut-off Date Pool Principal Balance and the original Pre-funded Amount as set
forth below:

<TABLE>
<CAPTION>
Distribution Date                                 Percentage
-----------------                                 ----------
<S>                                              <C>
December 2008 - November 2009..........          0.25% with respect to December 2008, plus an additional 1/12th of
                                                     0.40% for each month thereafter through November 2009

December 2009 - November 2010..........          0.65% with respect to December 2009, plus an additional 1/12th of
                                                    0.50% for each month thereafter through

                                       17
<PAGE>

Distribution Date                                 Percentage
-----------------                                 ----------
                                                    November 2010

December 2010 - November 2011..........          1.15% with respect to December 2010, plus an additional 1/12th of
                                                    0.50% for each month thereafter through November 2011

December 2011 - November 2012..........          1.65% with respect to December 2011, plus an additional 1/12th of
                                                    0.30% for each month thereafter through November 2012

December 2012 - November 2013..........          1.95% with respect to December 2012, plus an additional 1/12th of
                                                    0.05% for each month thereafter through November 2013

December 2013 and thereafter...........          2.00%
</TABLE>

      Current Interest: With respect to each Class of Offered Certificates and
each Distribution Date, the interest accrued at the applicable Pass-Through Rate
for the applicable Interest Accrual Period on the Class Certificate Balance of
such Class immediately prior to such Distribution Date.

      Cut-off Date: In the case of any Initial Mortgage Loan, the Initial
Cut-off Date, and in the case of any Supplemental Mortgage Loan, the related
Supplemental Cut-off Date.

      Cut-off Date Pool Principal Balance: An amount equal to the sum of (x) the
Initial Cut-off Date Pool Principal Balance plus (y) the amount, if any,
deposited in the Pre-funding Account on the Closing Date.

      Debt Service Reduction: With respect to any Mortgage Loan, a reduction by
a court of competent jurisdiction in a proceeding under the Bankruptcy Code in
the Scheduled Payment for such Mortgage Loan that became final and
non-appealable, except such a reduction resulting from a Deficient Valuation or
any reduction that results in a permanent forgiveness of principal.

      Defective Mortgage Loan: Any Mortgage Loan that is required to be
repurchased pursuant to Section 2.02 or 2.03.

      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 Payment that
results in a permanent forgiveness of principal, which valuation or reduction
results from an order of such court which is final and non-appealable in a
proceeding under the Bankruptcy Code.

      Definitive Certificates: Any Certificate evidenced by a Physical
Certificate and any Certificate issued in lieu of a Book-Entry Certificate
pursuant to Section 5.02(e).

Delay Certificates: As specified in the Preliminary Statement.

                                       18
<PAGE>

      Delay Delivery Certification: As defined in Section 2.02(a).

      Delay Delivery Mortgage Loans: The Mortgage Loans for which all or a
portion of a related Mortgage File is not delivered to the Trustee on the
Closing Date or Supplemental Transfer Date, as applicable. The number of Delay
Delivery Mortgage Loans shall not exceed 50% of the aggregate number of Initial
Mortgage Loans in each Loan Group and 90% of the Supplemental Mortgage Loans in
each Loan Group conveyed on the related Supplemental Transfer Date. To the
extent that Countrywide Servicing shall be in possession of any Mortgage Files
with respect to any Delay Delivery Mortgage Loan, until delivery of such
Mortgage File to the Trustee as provided in Section 2.01, Countrywide Servicing
shall hold such files as Master Servicer hereunder, as agent and in trust for
the Trustee.

       Deleted Mortgage Loan: As defined in Section 2.03(C).

      Delinquency Trigger Event: With respect to a Distribution Date on or after
the Stepdown Date, the Rolling Sixty-Day Delinquency Rate equals or exceeds the
product of (x) the Senior Enhancement Percentage for such Distribution Date and
(y) the applicable percentage listed below for the most senior Class of
outstanding LIBOR Certificates:

                             Class                              Percentage
         -------------------------------------------            ----------
         Senior Certificates........................                42.00%
         M-1........................................                59.00%
         M-2........................................                89.75%
         M-3........................................               108.00%
         M-4........................................               135.75%
         M-5........................................               172.50%
         M-6........................................               236.25%
         M-7........................................               375.50%
         M-8........................................               911.75%

      Delinquent: A Mortgage Loan is "delinquent" if any payment due thereon is
not made pursuant to the terms of such Mortgage Loan by the close of business on
the day such payment is scheduled to be due. A Mortgage Loan is "30 days
delinquent" if such payment has not been received by the close of business on
the corresponding day of the month immediately succeeding the month in which
such payment was due, or, if there is no such corresponding day (e.g., as when a
30-day month follows a 31-day month in which a payment was due on the 31st day
of such month), then on the last day of such immediately succeeding month.
Similarly for "60 days delinquent," "90 days delinquent" and so on.

      Denomination: With respect to each Certificate, the amount set forth on
the face of that Certificate as the "Initial Certificate Balance of this
Certificate" or the "Initial Notional Amount of this Certificate" or, if neither
of the foregoing, the Percentage Interest appearing on the face thereof.

      Depositor: CWALT, Inc., a Delaware corporation, or its successor in
interest.

                                        19
<PAGE>

      Depository: The initial Depository shall be The Depository Trust Company,
the nominee of which is CEDE & Co., as the registered Holder of the Book-Entry
Certificates. The Depository shall at all times be a "clearing corporation" as
defined in Section 8-102(a)(5) of the Uniform Commercial Code of the State of
New York.

      Depository Participant: A broker, dealer, bank or other financial
institution or other Person for whom from time to time a Depository effects
book-entry transfers and pledges of securities deposited with the Depository.

      Determination Date: As to any Distribution Date, the 22nd day of each
month or, if such 22nd day is not a Business Day, the next preceding Business
Day; provided, however, that if such 22nd day or such Business Day, whichever is
applicable, is less than two Business Days prior to the related Distribution
Date, the Determination Date shall be the first Business Day that is two
Business Days preceding such Distribution Date.

      Directing Certificateholder: As defined in Section 9.04(a).

      Distribution Account: The separate Eligible Account created and maintained
by the Trustee pursuant to Section 3.05(d) in the name of the Trustee for the
benefit of the Certificateholders and designated "The Bank of New York in trust
for registered holders of Alternative Loan Trust 2006-OC10, Mortgage
Pass-Through Certificates, Series 2006-OC10." Funds in the Distribution Account
shall be held in trust for the Certificateholders for the uses and purposes set
forth in this Agreement.

      Distribution Account Deposit Date: As to any Distribution Date, 12:30 p.m.
Pacific time on the Business Day immediately preceding such Distribution Date.

      Distribution Date: The 25th day of each calendar month after the initial
issuance of the Certificates, or if such 25th day is not a Business Day, the
next succeeding Business Day, commencing in December 2006.

      Due Date: With respect to a Mortgage Loan, the date on which Scheduled
Payments are due on that Mortgage Loan. With respect to any Distribution Date,
the related Due Date is the first day of the calendar month in which that
Distribution Date occurs.

      Due Period: Not applicable.

      EDGAR: The Commission's Electronic Data Gathering, Analysis and Retrieval
system.

      Eligible Account: Any of (i) an account or accounts maintained with a
federal or state chartered depository institution or trust company the
short-term unsecured debt obligations of which (or, in the case of a depository
institution or trust company that is the principal subsidiary of a holding
company, the debt obligations of such holding company) have the highest
short-term ratings of Moody's and one of the two highest short-term ratings of
S&P, if S&P is a Rating Agency at the time any amounts are held on deposit
therein, or (ii) an account or accounts in a depository institution or trust
company in which such accounts are insured by the FDIC (to the limits
established by the FDIC) and the uninsured deposits in which accounts are
otherwise secured such that, as evidenced by an Opinion of Counsel delivered to
the Trustee and to each

                                       20
<PAGE>

Rating Agency, the Certificateholders have a claim with respect to the funds in
such account or a perfected first priority security interest against any
collateral (which shall be limited to Permitted Investments) securing such funds
that is superior to claims of any other depositors or creditors of the
depository institution or trust company in which such account is maintained, or
(iii) a trust account or accounts maintained with (a) the trust department of a
federal or state chartered depository institution or (b) a trust company, acting
in its fiduciary capacity or (iv) any other account acceptable to each Rating
Agency. Eligible Accounts may bear interest, and may include, if otherwise
qualified under this definition, accounts maintained with the Trustee.

      Eligible Repurchase Month: As defined in Section 3.11.

       Eligible EPD Protected Mortgage Loan: A Mortgage Loan that (i) was
originated not more than one year prior to the Closing Date, (ii) was purchased
by a Seller or one of its affiliates pursuant to a purchase agreement containing
provisions under which the seller thereunder has become obligated to repurchase
such Mortgage Loan from Countrywide due to a Scheduled Payment due on or prior
to the first Scheduled Payment owing to the Trust Fund becoming delinquent and
(iii) was not purchased through Countrywide Home Loan Inc.'s Correspondent
Lending Division.

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

      ERISA-Qualifying Underwriting: A best efforts or firm commitment
underwriting or private placement that meets the requirements of the
Underwriter's Exemption.

      ERISA-Restricted Certificate: As specified in the Preliminary Statement.

      Escrow Account: The Eligible Account or Accounts established and
maintained pursuant to Section 3.06(a).

      Event of Default: As defined in Section 7.01.

      Excess Cashflow: With respect to any Distribution Date the sum of (i) the
amount remaining as set forth in Section 4.02(a)(iv)(B), (ii) the amount
remaining as set forth in Section 4.02(b)(i)(C) or 4.02(b)(ii)(C), as
applicable, in each case for such Distribution Date and (iii) the
Overcollateralization Reduction Amount for that Distribution Date, if any.

      Excess Overcollateralization Amount: With respect to any Distribution
Date, the excess, if any, of the Overcollateralized Amount for the Distribution
Date over the Overcollateralization Target Amount for the Distribution Date.

      Excess Proceeds: With respect to any Liquidated Mortgage Loan, the amount,
if any, by which the sum of any Liquidation Proceeds received with respect to
such Mortgage Loan during the calendar month in which such Mortgage Loan became
a Liquidated Mortgage Loan plus any Subsequent Recoveries received with respect
to such Mortgage Loan, net of any amounts previously reimbursed to the Master
Servicer as Nonrecoverable Advance(s) with respect to such Mortgage Loan
pursuant to Section 3.08(a)(iii), exceeds (i) the unpaid principal balance of
such Liquidated Mortgage Loan as of the Due

                                       21
<PAGE>

Date in the month in which such Mortgage Loan became a Liquidated Mortgage Loan
plus (ii) accrued interest at the Mortgage Rate from the Due Date as to which
interest was last paid or advanced (and not reimbursed) to Certificateholders up
to the Due Date applicable to the Distribution Date immediately following the
calendar month during which such liquidation occurred.

      Exchange Act: The Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.

      Exchange Act Reports: Any reports on Form 10-D, Form 8-K and Form 10-K
required to be filed by the Depositor with respect to the Trust Fund under the
Exchange Act.

      Expense Fee: As to each Mortgage Loan and any Distribution Date, the
product of the related Expense Fee Rate and its Stated Principal Balance as of
that Distribution Date.

      Expense Fee Rate: As to each Mortgage Loan and any date of determination,
the sum of (a) the related Master Servicing Fee Rate and (b) the Trustee Fee
Rate.

      Extra Principal Distribution Amount: With respect to any Distribution Date
and Loan Group, the product of (a) the lesser of (1) the Overcollateralization
Deficiency Amount and (2) the Excess Cashflow available for payment pursuant to
Section 4.02(c) and (b) a fraction, the numerator of which is the Principal
Remittance Amount for such Loan Group and the denominator of which is the sum of
the Principal Remittance Amounts for both Loan Groups.

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

      FHLMC: The Federal Home Loan Mortgage Corporation, a corporate
instrumentality of the United States created and existing under Title III of the
Emergency Home Finance Act of 1970, as amended, or any successor to the Federal
Home Loan Mortgage Corporation.

      Final Certification: As defined in Section 2.02(a).

      FIRREA: The Financial Institutions Reform, Recovery, and Enforcement Act
of 1989.

      Fitch: Fitch, Inc., or any successor thereto. If Fitch is designated as a
Rating Agency in the Preliminary Statement, for purposes of Section 10.05(b) the
address for notices to Fitch shall be Fitch, Inc., One State Street Plaza, New
York, New York 10004, Attention: Residential Mortgage Surveillance Group, or
such other address as Fitch may hereafter furnish to the Depositor and the
Master Servicer.

      FNMA: The Federal National Mortgage Association, a federally chartered and
privately owned corporation organized and existing under the Federal National
Mortgage Association Charter Act, or any successor to the Federal National
Mortgage Association.

      Form 10-D Disclosure Item: With respect to any Person, any material
litigation or governmental proceedings pending (a) against such Person, or (b)
against any of the Trust Fund, the Depositor, the Trustee, any co-trustee, the
Master Servicer or any Subservicer, if such Person has actual knowledge thereof.

      Form 10-K Disclosure Item: With respect to any Person, (a) any Form 10-D
Disclosure Item, and (b) any affiliations or relationships between such Person
and any Item 1119 Party.

                                       22
<PAGE>

      Funding Period: The period from the Closing Date until the earliest of (i)
the date on which the amount on deposit in the Pre-funding Account is less than
$150,000, or (ii) an Event of Default occurs or (iii) December 31, 2006.

      Funding Period Distribution Date: Each Distribution Date during the
Funding Period and, if the Funding Period ends after the Distribution Date in a
month, the immediately succeeding Distribution Date.

      Gross Margin: The percentage set forth in the related Mortgage Note for
the Mortgage Loans to be added to One-Year LIBOR for use in determining the
Mortgage Rate on each Adjustment Date, and which is set forth in the Mortgage
Loan Schedule.

      Group 1 Mortgage Loans: The Mortgage Loans in Loan Group 1.

      Group 1 Overcollateralization Reduction Amount: For any Distribution Date,
the Overcollateralization Reduction Amount for such Distribution Date multiplied
by a fraction, the numerator of which is the Principal Remittance Amount for
Loan Group 1 for such Distribution Date, and the denominator of which is the
aggregate Principal Remittance Amount for Loan Group 1 and Loan Group 2 for such
Distribution Date.

      Group 1 Principal Distribution Target Amount: For any Distribution Date,
the excess of (1) the Class Certificate Balance of the Class 1-A Certificates
immediately prior to such Distribution Date, over (2) the lesser of (x) 84.80%
of the aggregate Stated Principal Balance of the Mortgage Loans in Loan Group 1
as of the Due Date in the month of that Distribution Date (after giving effect
to Principal Prepayments received in the related Prepayment Period) and (y) the
aggregate Stated Principal Balance of the Mortgage Loans in Loan Group 1 as of
the Due Date in the month of that Distribution Date (after giving effect to
Principal Prepayments received in the related Prepayment Period) minus 0.35% of
the sum of the aggregate Stated Principal Balance of the Mortgage Loans in Loan
Group 1 as of the Initial Cut-off Date and the portion of the original
Pre-funded Amount allocated to Loan Group 1.

      Group 1 Senior Principal Distribution Amount: For any Distribution Date,
the product of (x) the Senior Principal Distribution Target Amount and (y) a
fraction, the numerator of which is the Group 1 Principal Distribution Target
Amount for Loan Group 1 and the denominator of which is the sum of the Group 1
Principal Distribution Target Amount and the Group 2 Principal Distribution
Target Amount.

      Group 1 Tax Net Rate Cap: As defined in the Preliminary Statement.

      Group 2 Mortgage Loans: The Mortgage Loans in Loan Group 2.

      Group 2 Overcollateralization Reduction Amount: For any Distribution Date,
the Overcollateralization Reduction Amount for such Distribution Date multiplied
by a fraction, the numerator of which is the Principal Remittance Amount for
Loan Group 2 for such Distribution Date, and the denominator of which is the
aggregate Principal Remittance Amount for Loan Group 1 and Loan Group 2 for such
Distribution Date.

      Group 2 Principal Distribution Target Amount: For any Distribution Date,
the excess of (1) the aggregate Class Certificate Balance of the Group 2 Senior
Certificates immediately prior

                                        23
<PAGE>

to such Distribution Date, over (2) the lesser of (x) 84.80% of the aggregate
Stated Principal Balance of the Mortgage Loans in Loan Group 2 as of the Due
Date in the month of that Distribution Date (after giving effect to Principal
Prepayments received in the related Prepayment Period) and (y) the aggregate
Stated Principal Balance of the Mortgage Loans in Loan Group 2 as of the Due
Date in the month of that Distribution Date (after giving effect to Principal
Prepayments received in the related Prepayment Period) minus 0.35% of the sum of
the aggregate Stated Principal Balance of the Mortgage Loans in Loan Group 2 as
of the Initial Cut-off Date and the portion of the original Pre-funded Amount
allocated to Loan Group 2.

      Group 2 Senior Principal Distribution Amount: For any Distribution Date,
the product of (x) the Senior Principal Distribution Target Amount and (y) a
fraction, the numerator of which is the Group 2 Principal Distribution Target
Amount for Loan Group 2 and the denominator of which is the sum of the Group 1
Principal Distribution Target Amount and the Group 2 Principal Distribution
Target Amount.

      Group 2 Tax Net Rate Cap: As defined in the Preliminary Statement.

      Index: With respect to any Interest Accrual Period for the COFI
Certificates, if any, the then-applicable index used by the Trustee pursuant to
Section 4.07 to determine the applicable Pass-Through Rate for such Interest
Accrual Period for the COFI Certificates.

      Indirect Participant: A broker, dealer, bank or other financial
institution or other Person that clears through or maintains a custodial
relationship with a Depository Participant.

      Initial Certification: As defined in Section 2.02(a).

      Initial Component Balance: As specified in the Preliminary Statement.

      Initial Cut-off Date: With respect to any Initial Mortgage Loan, the later
of (i) the date of origination of such Mortgage Loan and (ii) November 1, 2006.

      Initial Cut-off Date Pool Principal Balance: $799,232,004.

      Initial Mortgage Loan: With respect to any Mortgage Loan included in Loan
Group 1 or Loan Group 2, a Mortgage Loan conveyed to the Trust Fund on the
Closing Date pursuant to this Agreement as identified on the Mortgage Loan
Schedule delivered to the Trustee on the Closing Date.

      Initial Periodic Rate Cap: As to each Mortgage Loan and the related
Mortgage Note, the provision therein that limits permissible increases and
decreases in the Mortgage Rate on the first Adjustment Date for that Mortgage
Loan to not more than the amount set forth therein.

      Insurance Policy: With respect to any Mortgage Loan included in the Trust
Fund, any insurance policy, including all riders and endorsements thereto in
effect, including any replacement policy or policies for any Insurance Policies.

      Insurance Proceeds: Proceeds paid by an insurer pursuant to any Insurance
Policy, in each case other than any amount included in such Insurance Proceeds
in respect of Insured Expenses.

                                       24
<PAGE>

      Insured Expenses: Expenses covered by an Insurance Policy or any other
insurance policy with respect to the Mortgage Loans.

      Interest Accrual Period: With respect to each Class of Delay Certificates,
its corresponding REMIC Regular Interest and any Distribution Date, the calendar
month prior to the month of such Distribution Date. With respect to any Class of
Non-Delay Certificates, its corresponding REMIC Regular Interest and any
Distribution Date, the period commencing on the Distribution Date in the month
preceding the month in which such Distribution Date occurs (other than the first
Distribution Date, for which it is the Closing Date) and ending on the day
preceding such Distribution Date.

      Interest Carry Forward Amount: With respect to each Class of Offered
Certificates and each Distribution Date, the excess of (i) the Current Interest
for such Class with respect to prior Distribution Dates over (ii) the amount
actually distributed to such Class with respect to interest on such prior
Distribution Dates.

      Interest Determination Date: With respect to (a) any Interest Accrual
Period for any LIBOR Certificates and (b) any Interest Accrual Period for the
COFI Certificates for which the applicable Index is LIBOR, the second Business
Day prior to the first day of such Interest Accrual Period.

      Interest Funds: With respect to any Distribution Date and Loan Group, the
excess of the Interest Remittance Amount for that Loan Group over the portion of
the Trustee Fee for such Distribution Date allocable to such Loan Group.

      Interest Remittance Amount: With respect to the Mortgage Loans in a Loan
Group and any Distribution Date, (x) the sum, without duplication, of (i) all
scheduled interest on the Mortgage Loans in that Loan Group due on the related
Due Date and received on or prior to the related Determination Date, less the
related Master Servicing Fees and any payments made in respect of premiums on
Lender PMI Mortgage Loans, (ii) all interest on Principal Prepayments on the
Mortgage Loans in that Loan Group, other than Prepayment Interest Excess, (iii)
all Advances relating to interest with respect to the Mortgage Loans in that
Loan Group, (iv) all Compensating Interest with respect to the Mortgage Loans in
that Loan Group, (v) Liquidation Proceeds with respect to the Mortgage Loans in
that Loan Group during the related Prepayment Period (to the extent such
Liquidation Proceeds relate to interest) and (vi) with respect to each Loan
Group, on each Funding Period Distribution Date, the amount, if any, transferred
from the Capitalized Interest Account in respect of the applicable Capitalized
Interest Requirement with respect to such Loan Group, less (y) all
reimbursements to the Master Servicer since the immediately preceding Due Date
for Advances of interest previously made allocable to such Loan Group.

      Investment Letter: As defined in Section 5.02(b).

      ISDA Master Agreement: The 1992 ISDA Master Agreement (Multicurrency -
Cross Border), including the Schedule and Credit Support Annex thereto, dated
November 30, 2006, between the Swap Counterparty and the Swap Contract
Administrator.

      Item 1119 Party: The Depositor, any Seller, the Master Servicer, the
Trustee, any Subservicer, any originator identified in the Prospectus
Supplement, the Swap Counterparty and

                                       25
<PAGE>

any other material transaction party, as identified in Exhibit X hereto, as
updated pursuant to Section 11.04.

      Latest Possible Maturity Date: The Distribution Date following the third
anniversary of the scheduled maturity date of the Mortgage Loan having the
latest scheduled maturity date as of the Cut-off Date.

      Lender PMI Mortgage Loan: Certain Mortgage Loans as to which the lender
(rather than the Mortgagor) acquires the Primary Insurance Policy and charges
the related Mortgagor an interest premium.

      LIBOR: The London interbank offered rate for one-month United States
dollar deposits calculated in the manner described in Section 4.08.

      LIBOR Certificates: As specified in the Preliminary Statement.

      Limited Exchange Act Reporting Obligations: The obligations of the Master
Servicer under Section 3.16(b), Section 6.02 and Section 6.04 with respect to
notice and information to be provided to the Depositor and Article XI (except
Section 11.07(a)(1) and (2)).

      Liquidated Mortgage Loan: With respect to any Distribution Date, a
defaulted Mortgage Loan (including any REO Property) that was liquidated in the
calendar month preceding the month of such Distribution Date and as to which the
Master Servicer has determined (in accordance with this Agreement) that it has
received all amounts it expects to receive in connection with the liquidation of
such Mortgage Loan, including the final disposition of an REO Property.

      Liquidation Proceeds: Amounts, including Insurance Proceeds, received in
connection with the partial or complete liquidation of defaulted Mortgage Loans,
whether through trustee's sale, foreclosure sale or otherwise or amounts
received in connection with any condemnation or partial release of a Mortgaged
Property and any other proceeds received in connection with an REO Property,
less the sum of related unreimbursed Master Servicing Fees, Servicing Advances
and Advances.

      Loan Group: Any of Loan Group 1 and Loan Group 2, as applicable.

      Loan Group 1: All Mortgage Loans identified as Loan Group 1 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan Group 2: All Mortgage Loans identified as Loan Group 2 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan-to-Value Ratio: With respect to any Mortgage Loan and as to any date
of determination, the fraction (expressed as a percentage) the numerator of
which is the principal balance of the related Mortgage Loan at that date of
determination and the denominator of which is the Appraised Value of the related
Mortgaged Property.

      Lost Mortgage Note: Any Mortgage Note the original of which was
permanently lost or destroyed and has not been replaced.

                                       26
<PAGE>

      Maintenance: With respect to any Cooperative Unit, the rent paid by the
Mortgagor to the Cooperative Corporation pursuant to the Proprietary Lease.

       Majority in Interest: As to any Class of Regular Certificates, the Holders
of Certificates of such Class evidencing, in the aggregate, at least 51% of the
Percentage Interests evidenced by all Certificates of such Class.

      Master REMIC: As described in the Preliminary Statement.

      Master Servicer: Countrywide Home Loans Servicing LP, a Texas limited
partnership, and its successors and assigns, in its capacity as master servicer
hereunder.

      Master Servicer Advance Date: As to any Distribution Date, 12:30 p.m.
Pacific time on the Business Day immediately preceding such Distribution Date.

      Master Servicing Fee: As to each Mortgage Loan and any Distribution Date,
an amount payable out of each full payment of interest received on such Mortgage
Loan and equal to one-twelfth of the Master Servicing Fee Rate multiplied by the
Stated Principal Balance of such Mortgage Loan as of the Due Date in the month
preceding the month of such Distribution Date, subject to reduction as provided
in Section 3.14.

      Master Servicing Fee Rate: With respect to each Mortgage Loan, the per
annum rate set forth on the Mortgage Loan Schedule for such Mortgage Loan.

      Maximum Mortgage Rate: With respect to each Mortgage Loan, the maximum
rate of interest set forth as such in the related Mortgage Note.

      MERS: Mortgage Electronic Registration Systems, Inc., a corporation
organized and existing under the laws of the State of Delaware, or any successor
to Mortgage Electronic Registration Systems, Inc.

       MERS Mortgage Loan: Any Mortgage Loan registered with MERS on the MERS(R)
System.

      MERS(R) System: The system of recording transfers of mortgages
electronically maintained by MERS.

      MIN: The mortgage identification number for any MERS Mortgage Loan.

      Minimum Auction Amount: With respect to any auction of the Mortgage Loans
and any REO Properties pursuant to Section 9.04, the sum of (i) the Termination
Price that would be payable by the NIM Insurer if the Optional Termination were
exercised in the following calendar month pursuant to Section 9.01 and (ii) all
reasonable fees and expenses incurred by the Trustee in connection with any
auction conducted pursuant to Section 9.04.

      Minimum Mortgage Rate: With respect to each Mortgage Loan, the minimum
rate of interest set forth as such in the related Mortgage Note, which, with
respect to certain Mortgage Loans is equal to the related Gross Margin.

                                       27
<PAGE>

      MOM Loan: Any Mortgage Loan as to which MERS is acting as mortgagee,
solely as nominee for the originator of such Mortgage Loan and its successors
and assigns.

      Monthly Statement: The statement delivered to the Certificateholders
pursuant to Section 4.06.

      Moody's: Moody's Investors Service, Inc., or any successor thereto. If
Moody's is designated as a Rating Agency in the Preliminary Statement, for
purposes of Section 10.05(b) the address for notices to Moody's shall be Moody's
Investors Service, Inc., 99 Church Street, New York, New York 10007, Attention:
Residential Pass-Through Monitoring, or such other address as Moody's may
hereafter furnish to the Depositor or the Master Servicer.

      Mortgage: The mortgage, deed of trust or other instrument creating a first
lien on an estate in fee simple or leasehold interest in real property securing
a Mortgage Note.

      Mortgage File: The mortgage documents listed in Section 2.01 pertaining to
a particular Mortgage Loan and any additional documents delivered to the Trustee
to be added to the Mortgage File pursuant to this Agreement.

      Mortgage Loan Schedule: The list of Mortgage Loans (as from time to time
amended by the Master Servicer to reflect the addition of Substitute Mortgage
Loans, the addition of any Supplemental Mortgage Loans pursuant to the
provisions of this Agreement and any Supplemental Transfer Agreement and the
deletion of Deleted Mortgage Loans pursuant to the provisions of this Agreement)
transferred to the Trustee as part of the Trust Fund and from time to time
subject to this Agreement, attached to this Agreement as Schedule I, setting
forth the following information with respect to each Mortgage Loan:

            (i)    the loan number;

            (ii)   the Loan Group;

            (iii) the Mortgagor's name and the street address of the Mortgaged
            Property, including the zip code;

            (iv)   the maturity date;

            (v)    the original principal balance; (vi) the Cut-off Date
            Principal Balance;

            (vii) the first payment date of the Mortgage Loan;

            (viii) the Scheduled Payment in effect as of the Cut-off Date;

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

            (x)    a code indicating whether the residential dwelling at the time
            of origination was represented to be owner-occupied;

                                       28
<PAGE>

            (xi)   a code indicating whether the residential dwelling is either
            (a) a detached or attached single family dwelling, (b) a dwelling in
            a de minimis PUD, (c) a condominium unit or PUD (other than a de
            minimis PUD) or (d) a two- to four-unit residential property or (e)
            a Cooperative Unit;

            (xii) the Mortgage Rate as of the Cut-off Date, the Gross Margin,

            the Initial Periodic Rate Cap, the Subsequent Periodic Rate Cap, the
            Maximum Mortgage Rate and the Minimum Mortgage Rate;

            (xiii) the initial Adjustment Date and the Master Servicing Fee Rate
            both before and after the initial Adjustment Date for each Mortgage
            Loan;

            (xiv) a code indicating whether the Mortgage Loan is a Lender PMI
            Mortgage Loan and, in the case of any Lender PMI Mortgage Loan, a
            percentage representing the amount of the related interest premium
            charged to the borrower;

            (xv)   the purpose for the Mortgage Loan;

            (xvi) the type of documentation program pursuant to which the
             Mortgage Loan was originated;

            (xvii) a code indicating whether the Mortgage Loan is a Countrywide
            Mortgage Loan, a Park Granada Mortgage Loan, a Park Monaco Mortgage
            Loan or a Park Sienna Mortgage Loan;

             (xviii) the direct servicer of such Mortgage Loan as of the Cut-off
            Date; and

            (xix) a code indicating whether the Mortgage Loan is a MERS Mortgage
                  Loan.

      Such schedule shall also set forth the total of the amounts described
under (iv) and (v) above for all of the Mortgage Loans and for each Loan Group.
Countrywide shall update he Mortgage Loan Schedule in connection with each
Supplemental Transfer Agreement within a reasonable period of time after
delivery to it of the Schedule of Supplemental Mortgage Loans attached to the
related Supplemental Transfer Agreement as Schedule A thereto.

      Mortgage Loans: Such of the mortgage loans as from time to time are
transferred and assigned to the Trustee pursuant to the provisions of this
Agreement and any Supplemental Transfer Agreement and that are held as a part of
the Trust Fund (including any REO Property), the mortgage loans so held being
identified in the Mortgage Loan Schedule, notwithstanding foreclosure or other
acquisition of title of the related Mortgaged Property.

      Mortgage Note: The original executed note or other evidence of
indebtedness evidencing the indebtedness of a Mortgagor under a Mortgage Loan.

      Mortgage Pool: The aggregate of the Mortgage Loans identified in the
Mortgage Loan Schedule.

                                       29
<PAGE>

      Mortgage Rate: The annual rate of interest borne by a Mortgage Note from
time to time, net of any interest premium charged by the mortgagee to obtain or
maintain any Primary Insurance Policy.

      Mortgaged Property: The underlying property securing a Mortgage Loan,
which, with respect to a Cooperative Loan, is the related Coop Shares and
Proprietary Lease.

      Mortgagor: The obligor(s) on a Mortgage Note.

      National Cost of Funds Index: The National Monthly Median Cost of Funds
Ratio to SAIF-Insured Institutions published by the Office of Thrift
Supervision.

      Net Prepayment Interest Shortfalls: As to any Distribution Date and Loan
Group, the excess of the amount of the aggregate Prepayment Interest Shortfalls
for that Loan Group during the related Prepayment Period over the sum of (i) the
Compensating Interest for such Loan Group and Distribution Date and (ii) the
excess, if any, of the Compensating Interest for the other Loan Group for such
Distribution Date over the Prepayment Interest Shortfall for such other Loan
Group.

      Net Rate Cap: For each Distribution Date and the Senior Certificates the
weighted average Adjusted Net Mortgage Rate on the Mortgage Loans in the related
Loan Group as of the Due Date in the prior calendar month (after giving effect
to Principal Prepayments received in the Prepayment Period related to that prior
Due Date), adjusted to an effective rate reflecting the accrual of interest on
the basis of a 360-day year and the actual number of days that elapsed in the
related Interest Accrual Period, minus the Swap Adjustment Rate for such
Distribution Date and the related Loan Group. For each Distribution Date and the
Subordinated Certificates, the Subordinate Net Rate Cap.

      Net Rate Carryover: For any Class of LIBOR Certificates and any
Distribution Date, the sum of (A) the excess of (i) the amount of interest that
such Class would otherwise have accrued for such Distribution Date had the
Pass-Through Rate for such Class not been determined based on the applicable Net
Rate Cap, over (ii) the amount of interest accrued on such Class at the
applicable Net Rate Cap for such Distribution Date and (B) the Net Rate
Carryover for such Class for all previous Distribution Dates not previously paid
pursuant to Section 4.02, together with interest thereon at the then applicable
Pass-Through Rate for such Class, without giving effect to the applicable Net
Rate Cap.

      Net Swap Payment: With respect to the Swap Contract, any Distribution Date
and payment by the Swap Contract Administrator to the Swap Counterparty, the
excess, if any, of the "Fixed Amount" (as defined in the Swap Contract) with
respect to such Distribution Date over the "Floating Amount" (as defined in the
Swap Contract) with respect to such Distribution Date. With respect to any
Distribution Date and payment by the Swap Counterparty to the Swap Contract
Administrator, the excess, if any, of the "Floating Amount" (as defined in the
Swap Contract) with respect to such Distribution Date over the "Fixed Amount"
(as defined in the Swap Contract) with respect to such Distribution Date.

      NIM Insurer: Any insurer guarantying at the request of Countrywide certain
payments under notes backed or secured by the Class C or Class P Certificates.

                                       30
<PAGE>

      Non-Delay Certificates: As specified in the Preliminary Statement.

      Nonrecoverable Advance: Any portion of an Advance previously made or
proposed to be made by the Master Servicer that, in the good faith judgment of
the Master Servicer, will not be ultimately recoverable by the Master Servicer
from the related Mortgagor, related Liquidation Proceeds or otherwise.

      Notice of Final Distribution: The notice to be provided pursuant to
Section 9.02 to the effect that final distribution on any of the Certificates
shall be made only upon presentation and surrender thereof.

      Notional Amount: Not applicable.

      Notional Amount Certificates: As specified in the Preliminary Statement.

      OC Floor: With respect to any Distribution Date prior to the Distribution
Date in December 2026, an amount equal to 0.35% of the sum of the Initial
Cut-off Date Pool Principal Balance and the original Pre-funded Amount. With
respect to any Distribution Date on or after the Distribution Date in December
2026, the greater of (a) 0.35% of the sum of the Initial Cut-off Date Pool
Principal Balance and the original Pre-funded Amount and (b) the sum of (x) the
aggregate Stated Principal Balance of the 40-Year Mortgage Loans as of the Due
Date in the month of that Distribution Date (after giving effect to Principal
Prepayments received in the related Prepayment Period) and (y) 0.10% of the sum
of the Initial Cut-off Date Pool Principal Balance and the original Pre-funded
Amount.

      Offered Certificates: As specified in the Preliminary Statement.

      Officer's Certificate: A certificate (i) in the case of the Depositor,
signed by the Chairman of the Board, the Vice Chairman of the Board, the
President, a Managing Director, a Vice President (however denominated), an
Assistant Vice President, the Treasurer, the Secretary, or one of the Assistant
Treasurers or Assistant Secretaries of the Depositor, (ii) in the case of the
Master Servicer, signed by the President, an Executive Vice President, a Vice
President, an Assistant Vice President, the Treasurer, or one of the Assistant
Treasurers or Assistant Secretaries of Countrywide GP, Inc., its general
partner, (iii) if provided for in this Agreement, signed by a Servicing Officer,
as the case may be, and delivered to the Depositor and the Trustee, as the case
may be, as required by this Agreement or (iv) in the case of any other Person,
signed by an authorized officer of such Person.

      One-Year LIBOR: As of any date of determination, the per annum rate equal
to the average of the London interbank offered rates for one-year U.S. dollar
deposits in the London market, generally as set forth in either The Wall Street
Journal or some other source generally accepted in the residential mortgage loan
origination business and specified in the related Mortgage Note, or, if such
rate ceases to be published in The Wall Street Journal or becomes unavailable
for any reason, then based upon a new index selected by the Master Servicer,
based on comparable information, in each case, as most recently announced as of
either 45 days prior to, or the first business day of the month immediately
preceding the month of, such Adjustment Date.

                                       31
<PAGE>

      Opinion of Counsel: A written opinion of counsel, who may be counsel for a
Seller, the Depositor or the Master Servicer, including, in-house counsel,
reasonably acceptable to the Trustee; provided, however, that with respect to
the interpretation or application of the REMIC Provisions, such counsel must (i)
in fact be independent of a Seller, the Depositor and the Master Servicer, (ii)
not have any direct financial interest in a Seller, the Depositor or the Master
Servicer or in any affiliate thereof, and (iii) not be connected with a Seller,
the Depositor or the Master Servicer as an officer, employee, promoter,
underwriter, trustee, partner, director or person performing similar functions.

      Optional Termination: The termination of the Trust Fund provided hereunder
pursuant to clause (a) of the first sentence of Section 9.01.

      Optional Termination Date: The first Distribution Date on which the
aggregate Stated Principal Balance of the Mortgage Loans is less than or equal
to 10% of the sum of (a) the Initial Cut-off Date Pool Principal Balance and (b)
any amount on deposit in the Pre-funding Account on the Closing Date.

      Original Mortgage Loan: The mortgage loan refinanced in connection with
the origination of a Refinancing Mortgage Loan.

      OTS: The Office of Thrift Supervision.

      Outside Reference Date: As to any Interest Accrual Period for the COFI
Certificates, the close of business on the tenth day thereof.

      Outstanding: With respect to the Certificates as of any date of
determination, all Certificates theretofore executed and authenticated under
this Agreement except:

                  (i) Certificates theretofore canceled by the Trustee or
                  delivered to the Trustee for cancellation; and

                  (ii) Certificates in exchange for which or in lieu of which
                  other Certificates have been executed and delivered by the
                   Trustee pursuant to this Agreement.

      Outstanding Mortgage Loan: As of any Due Date, a Mortgage Loan with a
Stated Principal Balance greater than zero, which was not the subject of a
Principal Prepayment in Full prior to the end of the related Prepayment Period
and which did not become a Liquidated Mortgage Loan prior to the end of the
related Prepayment Period.

      Overcollateralization Deficiency Amount: With respect to any Distribution
Date, the amount, if any, by which the Overcollateralization Target Amount
exceeds the Overcollateralized Amount on such Distribution Date (after giving
effect to distributions in respect of the Principal Remittance Amount for each
Loan Group on such Distribution Date).

      Overcollateralization Reduction Amount: With respect to any Distribution
Date, the amount equal to the lesser of (i) the Excess Overcollateralization
Amount for the Distribution Date and (ii) the Principal Remittance Amount for
Loan Group 1 and Loan Group 2 for the Distribution Date.

                                        32
<PAGE>

      Overcollateralization Target Amount: With respect to any Distribution
Date, (i) prior to the Stepdown Date, an amount equal to the greater of (a) the
product of (1) 0.35%, (2) the Initial Cut-Off Date Pool Principal Balance and
(3) the original Pre-funded Amount and (b) the OC Floor, and (ii) on or after
the Stepdown Date, an amount equal to the greater of (a) the product of (1)
0.70% and (2) the aggregate Stated Principal Balance of the Mortgage Loans as of
the Due Date in the month of that Distribution Date (after giving effect to
principal prepayments, the principal portion of any liquidation proceeds and any
Subsequent Recoveries received in the related Prepayment Period) and (b) the OC
Floor provided, however, that if a Trigger Event is in effect on any
Distribution Date, the Overcollateralization Target Amount will be the
Overcollateralization Target Amount as in effect for the prior Distribution
Date.

      Overcollateralized Amount: For any Distribution Date, the amount, if any,
by which (x) the aggregate Stated Principal Balance of the Mortgage Loans as of
the Due Date in the month of that Distribution Date (after giving effect to
Principal Prepayments, the principal portion of any Liquidation Proceeds and any
Subsequent Recoveries received in the related Prepayment Period) exceeds (y) the
aggregate Class Certificate Balance of the Offered Certificates as of such
Distribution Date (after giving effect to distributions of the Principal
Remittance Amount for each Loan Group to be made on such Distribution Date) and,
in the case of the Distribution Date immediately following the end of the
Funding Period, any amounts to be released from the Pre-funding Account.

      Ownership Interest: As to any Residual Certificate, any ownership interest
in such Certificate including any interest in such Certificate as the Holder
thereof and any other interest therein, whether direct or indirect, legal or
beneficial.

      Park Granada: Park Granada LLC, a Delaware limited liability company, and
its successors and assigns, in its capacity as the seller of the Park Granada
Mortgage Loans to the Depositor.

      Park Granada Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule for which Park Granada is the applicable Seller.

      Park Monaco: Park Monaco Inc., a Delaware corporation, and its successors
and assigns, in its capacity as the seller of the Park Monaco Mortgage Loans to
the Depositor.

      Park Monaco Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule for which Park Monaco is the applicable Seller.

      Park Sienna: Park Sienna LLC, a Delaware limited liability company, and
its successors and assigns, in its capacity as the seller of the Park Sienna
Mortgage Loans to the Depositor.

      Park Sienna Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule for which Park Sienna is the applicable Seller.

      Pass-Through Margin: With respect to the Interest Accrual Period for any
Distribution Date and Class of LIBOR Certificates, the per annum rate indicated
in the following table:

                                       33
<PAGE>

             ------------------ ------------------------ -----------------------
                       Class      Pass-Through Margin (1)   Pass-Through Margin (2)
             ------------------ ------------------------ -----------------------
             Class 1-A........           0.160%                    0.320%
             ------------------ ------------------------ -----------------------
             Class 2-A-1......           0.090%                    0.180%
             ------------------ ------------------------ -----------------------
             Class 2-A-2A.....           0.180%                     0.360%
             ------------------ ------------------------ -----------------------
             Class 2-A-2B.....           0.220%                    0.440%
             ------------------ ------------------------ -----------------------
              Class 2-A-3......           0.230%                    0.460%
             ------------------ ------------------------ -----------------------
             Class M-1........           0.300%                    0.450%
             ------------------ ------------------------ -----------------------
             Class M-2........           0.310%                    0.465%
             ------------------ ------------------------ -----------------------
             Class M-3........           0.340%                     0.510%
             ------------------ ------------------------ -----------------------
             Class M-4........           0.420%                    0.630%
             ------------------ ------------------------ -----------------------
              Class M-5........           0.460%                    0.690%
             ------------------ ------------------------ -----------------------
             Class M-6........           0.510%                    0.765%
             ------------------ ------------------------ -----------------------
             Class M-7........           1.200%                    1.800%
             ------------------ ------------------------ -----------------------
             Class M-8........           1.450%                     2.175%
             ------------------ ------------------------ -----------------------
            (1)    For the Interest Accrual Period related to any Distribution
                  Date occurring on or prior to the Optional Termination Date.
             (2)    For the Interest Accrual Period related to any Distribution
                  Date occurring after the Optional Termination Date.

      Pass-Through Rate: With respect to any Interest Accrual Period and each
Class of LIBOR Certificates the lesser of (x) LIBOR for such Interest Accrual
Period plus the Pass-Through Margin for such Class and Interest Accrual Period
and (y) the applicable Net Rate Cap for such Class and the related Distribution
Date.

      Percentage Interest: As to any Certificate, the percentage interest
evidenced thereby in distributions required to be made on the related Class,
such percentage interest being set forth on the face thereof or equal to the
percentage obtained by dividing the Denomination of such Certificate by the
aggregate of the Denominations of all Certificates of the same Class. With
respect to the Class C, Class P and Class A-R Certificates, the portion of the
Class evidenced thereby, expressed as a percentage, as stated on the face of
such Certificate.

       Performance Certification: As defined in Section 11.05.

      Permitted Investments: At any time, any one or more of the following
obligations and securities:

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

            (ii) general obligations of or obligations guaranteed by any state
            of the United States or the District of Columbia receiving the
             highest long-term debt rating of each Rating Agency, or such lower
            rating as will not result in the downgrading or withdrawal of the
            ratings then assigned to the Certificates by each Rating Agency;

            (iii) commercial or finance company paper which is then receiving
            the highest commercial or finance company paper rating of each
            Rating Agency, or such

                                       34
<PAGE>

            lower rating as will not result in the downgrading or withdrawal of
            the ratings then assigned to the Certificates by each Rating Agency;

            (iv) certificates of deposit, demand or time deposits, or bankers'
            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
            long term unsecured 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
            long-term unsecured debt obligations of such holding company, but
            only if Moody's is not a Rating Agency) are then rated one of the
            two highest long-term and the highest short-term ratings of each
            Rating Agency for such securities, or such lower ratings as will not
            result in the downgrading or withdrawal of the rating then assigned
            to the Certificates by either Rating Agency;

            (v) repurchase obligations with respect to any security described in
             clauses (i) and (ii) above, in either case entered into with a
            depository institution or trust company (acting as principal)
            described in clause (iv) above;

            (vi) units of a taxable money-market portfolio having the highest
            rating assigned by each Rating Agency (except if Fitch is a Rating
            Agency and has not rated the portfolio, the highest rating assigned
            by Moody's) and restricted to obligations issued or guaranteed by
             the United States of America or entities whose obligations are
            backed by the full faith and credit of the United States of America
            and repurchase agreements collateralized by such obligations; and

            (vii) such other relatively risk free investments bearing interest
            or sold at a discount acceptable to each Rating Agency as will not
            result in the downgrading or withdrawal of the rating then assigned
            to the Certificates by either Rating Agency, as evidenced by a
            signed writing delivered by each Rating Agency, and reasonably
            acceptable to the NIM Insurer, as evidenced by a signed writing
            delivered by the NIM Insurer;

provided, that no such instrument shall be a Permitted Investment if such
instrument evidences the right to receive interest only payments with respect to
the obligations underlying such instrument.

Permitted Transferee: Any person other than (i) the United States, any State or
political subdivision thereof, or any agency or instrumentality of any of the
foregoing, (ii) a foreign government, International Organization or any agency
or instrumentality of either of the foregoing, (iii) an organization (except
certain farmers' cooperatives described in Section 521 of the Code) which is
exempt from tax imposed by Chapter 1 of the Code (including the tax imposed by
Section 511 of the Code on unrelated business taxable income) on any excess
inclusions (as defined in Section 860E(c)(1) of the Code) with respect to any
Residual Certificate, (iv) rural electric and telephone cooperatives described
in Section 1381(a)(2)(C) of the Code, (v) an "electing large partnership" as
defined in Section 775 of the Code, (vi) a Person that is not a citizen or
resident of the United States, a corporation, partnership, or other entity

                                       35
<PAGE>

created or organized in or under the laws of the United States, any state
thereof or the District of Columbia, or an estate or trust whose income from
sources without the United States is includible in gross income for United
States federal income tax purposes regardless of its connection with the conduct
of a trade or business within the United States or a trust if a court within the
United States is able to exercise primary supervision over the administration of
the trust and one or more United States persons have the authority to control
all substantial decisions of the trust unless such Person has furnished the
transferor and the Trustee with a duly completed Internal Revenue Service Form
W-8ECI or any applicable successor form, and (vii) any other Person so
designated by the Depositor based upon an Opinion of Counsel that the Transfer
of an Ownership Interest in a Residual Certificate to such Person may cause any
REMIC created under this Agreement to fail to qualify as a REMIC at any time
that the Certificates are outstanding. The terms "United States," "State" and
"International Organization" shall have the meanings set forth in Section 7701
of the Code or successor provisions. A corporation will not be treated as an
instrumentality of the United States or of any State or political subdivision
thereof for these purposes if all of its activities are subject to tax and, with
the exception of the Federal Home Loan Mortgage Corporation, a majority of its
board of directors is not selected by such government unit.

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

      Physical Certificate: As specified in the Preliminary Statement.

      Pool Characteristics: With respect to the Mortgage Loans in Loan Group 1
and Loan Group 2 as of the Cut-off Date, the related characteristics set forth
in the sixth bullet point under "The Mortgage Pool--Conveyance of Supplemental
Mortgage Loans" set forth on page S-65 of the Prospectus Supplement.

      Pool Stated Principal Balance: The aggregate of the Stated Principal
Balances of the Outstanding Mortgage Loans plus the amount on deposit in the
Pre-funding Account, exclusive of any investment income included therein.

      Pre-funded Amount: The amount deposited in the Pre-funding Account on the
Closing Date, which shall equal $9,002,510.

      Pre-funding Account: The separate Eligible Account created and maintained
by the Trustee pursuant to Section 3.05 in the name of the Trustee for the
benefit of the Certificateholders and designated "The Bank of New York, in trust
for registered holders of Alternative Loan Trust 2006-OC10, Mortgage
Pass-Through Certificates, Series 2006-OC10, Offered Certificates." Funds in the
Pre-funding Account shall be held in trust for the Certificateholders for the
uses and purposes set forth in this Agreement and shall not be a part of any
REMIC created hereunder; provided, however, that any investment income earned
from Permitted Investments made with funds in the Pre-funding Account shall be
for the account of the Depositor.

      Prepayment Charge: With respect to any Mortgage Loan, the charges or
premiums, if any, due in connection with a full or partial prepayment of such
Mortgage Loan within the related Prepayment Charge Period in accordance with the
terms thereof.

                                       36
<PAGE>

      Prepayment Charge Amount: As to any Distribution Date, the sum of the
Prepayment Charges collected on the Mortgage Loans during the related Prepayment
Period and any amounts paid pursuant to Section 3.20 with respect to such
Distribution Date.

      Prepayment Charge Period: With respect to any Mortgage Loan, the period of
time during which a Prepayment Charge may be imposed.

      Prepayment Charge Schedule: As of the Cut off Date with respect to each
Mortgage Loan, a list attached hereto as Schedule VII (including the prepayment
charge summary attached thereto), setting forth the following information with
respect to each Prepayment Charge:

            (i) the Mortgage Loan identifying number;

            (ii) a code indicating the type of Prepayment Charge;

            (iii) the state of origination of the related Mortgage Loan;

            (iv) the date on which the first monthly payment was due on the
      related Mortgage Loan;

            (v) the term of the related Prepayment Charge; and

            (vi) the principal balance of the related Mortgage Loan as of the
      Cut off Date.

      As of the Closing Date, the Prepayment Charge Schedule shall contain the
necessary information for each Mortgage Loan. The Prepayment Charge Schedule
shall be amended from time to time by the Master Servicer in accordance with the
provisions of this Agreement and a copy of each related amendment shall be
furnished by the Master Servicer to the Class P and Class C Certificateholders
and the NIM Insurer.

      Prepayment Interest Excess: As to any Principal Prepayment received by the
Master Servicer from the first day through the fifteenth day of any calendar
month (other than the calendar month in which the Initial Cut-off Date occurs),
all amounts paid by the related Mortgagor in respect of interest on such
Principal Prepayment. All Prepayment Interest Excess shall be paid to the Master
Servicer as additional master servicing compensation.

      Prepayment Interest Shortfall: As to any Distribution Date, Mortgage Loan
and Principal Prepayment received on or after the sixteenth day of the month
preceding the month of such Distribution Date (or, in the case of the first
Distribution Date, on or after November 1, 2006) and on or before the last day
of the month preceding the month of such Distribution Date, the amount, if any,
by which one month's interest at the related Mortgage Rate, net of the related
Master Servicing Fee Rate, on such Principal Prepayment exceeds the amount of
interest paid in connection with such Principal Prepayment.

      Prepayment Period: As to any Distribution Date and the related Due Date,
the period from the 16th day of the calendar month immediately preceding the
month in which the Distribution Date occurs (or, in the case of the first
Distribution Date, from November 1, 2006) through the 15th day of the calendar
month in which the Distribution Date occurs.

                                       37
<PAGE>

      Primary Insurance Policy: Each policy of primary mortgage guaranty
insurance or any replacement policy therefor with respect to any Mortgage Loan.

      Prime Rate: The prime commercial lending rate of The Bank of New York, as
publicly announced to be in effect from time to time. The Prime Rate shall be
adjusted automatically, without notice, on the effective date of any change in
such prime commercial lending rate. The Prime Rate is not necessarily The Bank
of New York's lowest rate of interest.

      Principal Distribution Amount: With respect to each Distribution Date and
Loan Group, the sum of: (i) (1) the Principal Remittance Amount for such Loan
Group and Distribution Date, less any portion of such amount used to cover any
payment due to the Swap Counterparty with respect to such Distribution Date, and
(2) the Extra Principal Distribution Amount for such Loan Group and Distribution
Date minus (ii) (1) the Group 1 Overcollateralization Reduction Amount for the
Distribution Date, in the case of Loan Group 1, and (2) the Group 2
Overcollateralization Reduction Amount for the Distribution Date, in the case of
Loan Group 2.

      Principal Prepayment: Any payment of principal by a Mortgagor on a
Mortgage Loan that is received in advance of its scheduled Due Date and is not
accompanied by an amount representing scheduled interest due on any date or
dates in any month or months subsequent to the month of prepayment. Partial
Principal Prepayments shall be applied by the Master Servicer in accordance with
the terms of the related Mortgage Note.

      Principal Prepayment in Full: Any Principal Prepayment made by a Mortgagor
of the entire principal balance of a Mortgage Loan.

      Principal Remittance Amount: As to any Distribution Date and either Loan
Group, (x) the sum, without duplication, of (a) the principal portion of each
Scheduled Payment (without giving effect to any reductions thereof caused by any
Debt Service Reductions or Deficient Valuations) due on each Mortgage Loan in
that Loan Group (other than a Liquidated Mortgage Loan) on the related Due Date,
(b) the principal portion of the Purchase Price of each Mortgage Loan in that
Loan Group that was repurchased by the applicable Seller or purchased by the
Master Servicer pursuant to this Agreement as of such Distribution Date, (c) the
Substitution Adjustment Amount in connection with any Deleted Mortgage Loan in
that Loan Group received with respect to such Distribution Date, (d) any
Insurance Proceeds or Liquidation Proceeds allocable to recoveries of principal
of Mortgage Loans in that Loan Group that are not yet Liquidated Mortgage Loans
received during the calendar month preceding the month of such Distribution
Date, (e) with respect to each Mortgage Loan in that Loan Group that became a
Liquidated Mortgage Loan during the related Prepayment Period, the amount of the
Liquidation Proceeds allocable to principal received during such Prepayment
Period with respect to such Mortgage Loan, (f) all Principal Prepayments on the
Mortgage Loans in that Loan Group received during the related Prepayment Period,
(g) any Subsequent Recoveries on the Mortgage Loans in that Loan Group received
during the related Prepayment Period and (h) with respect to the last Funding
Period Distribution Date, the related Remaining Pre-funded Amount minus (y) all
Advances on the Mortgage Loans in that Loan Group relating to principal and
certain expenses reimbursable pursuant to Section 6.03 and reimbursed since the
immediately preceding Due Date.

                                        38
<PAGE>

      Principal Reserve Fund: The separate Eligible Account created and
initially maintained by the Trustee pursuant to Section 3.05(c) in the name of
the Trustee for the benefit of the Holders of the Class P Certificates and
designated "The Bank of New York in trust for registered holders of CWALT, Inc.,
Alternative Loan Trust 2006-OC10, Mortgage Pass-Through Certificates, Series
2006-OC10." Funds in the Principal Reserve Fund shall be held in trust for the
Holders of the Class P Certificates for the uses and purposes set forth in this
Agreement.

      Priority Amount: Not applicable.

      Priority Percentage: Not applicable.

      Private Certificate: As specified in the Preliminary Statement.

      Proprietary Lease: With respect to any Cooperative Unit, a lease or
occupancy agreement between a Cooperative Corporation and a holder of related
Coop Shares.

      Prospectus: The prospectus dated November 14, 2006 generally relating to
mortgage pass-through certificates to be sold by the Depositor.

      Prospectus Supplement: The prospectus supplement dated November 29, 2006
relating to the Offered Certificates.

      PUD: Planned Unit Development.

      Purchase Price: With respect to any Mortgage Loan required to be purchased
by the applicable Seller pursuant to Section 2.02 or 2.03 or purchased at the
option of the Master Servicer pursuant to Section 3.11, an amount equal to the
sum of (i) 100% of the unpaid principal balance of the Mortgage Loan on the date
of such purchase, (ii) accrued interest thereon at the applicable Mortgage Rate
(or at the applicable Adjusted Mortgage Rate if (x) the purchaser is the Master
Servicer or (y) if the purchaser is Countrywide and Countrywide is an affiliate
of the Master Servicer) from the date through which interest was last paid by
the Mortgagor to the Due Date in the month in which the Purchase Price is to be
distributed to Certificateholders and (iii) costs and damages incurred by the
Trust Fund in connection with a repurchase pursuant to Section 2.03 that arises
out of a violation of any predatory or abusive lending law with respect to the
related Mortgage Loan.

      Qualified Bidder: With respect to any auction pursuant to Section 9.04,
any institution that is a regular purchaser and/or seller in the secondary
market of residential mortgage loans as determined by the Trustee (or any
advisor on its behalf), in its sole discretion, and any holder of an interest in
the Class C Certificates; provided, however, that neither Countrywide nor any of
its affiliates shall constitute a Qualified Bidder.

      Qualified Insurer: A mortgage guaranty insurance company duly qualified as
such under the laws of the state of its principal place of business and each
state having jurisdiction over such insurer in connection with the insurance
policy issued by such insurer, duly authorized and licensed in such states to
transact a mortgage guaranty insurance business in such states and to write the
insurance provided by the insurance policy issued by it, approved as a
FNMA-approved mortgage insurer and having a claims paying ability rating of at
least "AA" or equivalent rating

                                       39
<PAGE>

by a nationally recognized statistical rating organization. Any replacement
insurer with respect to a Mortgage Loan must have at least as high a claims
paying ability rating as the insurer it replaces had on the Closing Date.

      Rating Agency: Each of the Rating Agencies specified in the Preliminary
Statement. If any such organization or a successor is no longer in existence,
"Rating Agency" shall be such nationally recognized statistical rating
organization, or other comparable Person, identified as a "Rating Agency" under
the Underwriter's Exemption, as is designated by the Depositor, notice of which
designation shall be given to the Trustee. References in this Agreement to a
given rating category of a Rating Agency shall mean such rating category without
giving effect to any modifiers.

      Realized Loss: With respect to each Liquidated Mortgage Loan, an amount
(not less than zero or more than the Stated Principal Balance of the Mortgage
Loan) as of the date of such liquidation, equal to (i) the Stated Principal
Balance of the Liquidated Mortgage Loan as of the date of such liquidation, plus
(ii) interest at the Adjusted Net Mortgage Rate from the Due Date as to which
interest was last paid or advanced (and not reimbursed) to Certificateholders up
to the Due Date in the month in which Liquidation Proceeds are required to be
distributed on the Stated Principal Balance of such Liquidated Mortgage Loan
from time to time, minus (iii) the Liquidation Proceeds, if any, received during
the month in which such liquidation occurred, to the extent applied as
recoveries of interest at the Adjusted Net Mortgage Rate and to principal of the
Liquidated Mortgage Loan. With respect to each Mortgage Loan which has become
the subject of a Deficient Valuation, if the principal amount due under the
related Mortgage Note has been reduced, the difference between the principal
balance of the Mortgage Loan outstanding immediately prior to such Deficient
Valuation and the principal balance of the Mortgage Loan as reduced by the
Deficient Valuation.

      To the extent the Master Servicer receives Subsequent Recoveries with
respect to any Mortgage Loan, the amount of Realized Losses with respect to that
Mortgage Loan will be reduced by the amount of such Subsequent Recoveries.

      Recognition Agreement: With respect to any Cooperative Loan, an agreement
between the Cooperative Corporation and the originator of such Mortgage Loan
which establishes the rights of such originator in the Cooperative Property.

      Record Date: With respect to any Distribution Date and the Delay
Certificates, the last Business Day of the month preceding the month of a
Distribution Date. With respect to any Distribution Date and the Non-Delay
Certificates, the Business Day immediately preceding such Distribution Date, or
if such Certificates are no longer Book-Entry Certificates, the last Business
Day of the month preceding the month of such Distribution Date.

      Reference Bank: As defined in Section 4.08(b).

      Refinancing Mortgage Loan: Any Mortgage Loan originated in connection with
the refinancing of an existing mortgage loan.

      Regular Certificates: As specified in the Preliminary Statement.

                                       40
<PAGE>

      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 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.

      Relief Act: The Servicemembers Civil Relief Act and any similar state or
local laws.

      Remaining Pre-funded Amount: With respect to the last Funding Period
Distribution Date and any Loan Group, any portion of the Pre-funded Amount
allocated to such Loan Group remaining in the Pre-funding Account.

      REMIC: A "real estate mortgage investment conduit" within the meaning of
Section 860D of the Code.

      REMIC Change of Law: Any proposed, temporary or final regulation, revenue
ruling, revenue procedure or other official announcement or interpretation
relating to REMICs and the REMIC Provisions issued after the Closing Date.

      REMIC Provisions: Provisions of the federal income tax law relating to
real estate mortgage investment conduits, which appear at Sections 860A through
860G of Subchapter M of Chapter 1 of the Code, and related provisions, and
regulations promulgated thereunder, as the foregoing may be in effect from time
to time as well as provisions of applicable state laws.

      REO Property: A Mortgaged Property acquired by the Trust Fund through
foreclosure or deed-in-lieu of foreclosure in connection with a defaulted
Mortgage Loan.

      Reportable Event: Any event required to be reported on Form 8-K, and in
any event, the following:

            (a) entry into a definitive agreement related to the Trust Fund, the
      Certificates or the Mortgage Loans, or an amendment to a Transaction
      Document, even if the Depositor is not a party to such agreement (e.g., a
      servicing agreement with a servicer contemplated by Item 1108(a)(3) of
      Regulation AB);

            (b) termination of a Transaction Document (other than by expiration
      of the agreement on its stated termination date or as a result of all
      parties completing their obligations under such agreement), even if the
      Depositor is not a party to such agreement (e.g., a servicing agreement
      with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

            (c) with respect to the Master Servicer only, if the Master Servicer
      becomes aware of any bankruptcy or receivership with respect to
      Countrywide, the Depositor, the Master Servicer, any Subservicer, the
      Trustee, the Swap Counterparty, any enhancement or support provider
      contemplated by Items 1114(b) or 1115 of Regulation AB, or any other
      material party contemplated by Item 1101(d)(1) of Regulation AB;

                                       41
<PAGE>

            (d) with respect to the Trustee, the Master Servicer and the
      Depositor only, the occurrence of an early amortization, performance
      trigger or other event, including an Event of Default under this
      Agreement;

            (e) the resignation, removal, replacement, substitution of the
      Master Servicer, any Subservicer or the Trustee;

            (f) with respect to the Master Servicer only, if the Master Servicer
      becomes aware that (i) any material enhancement or support specified in
      Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB
      that was previously applicable regarding one or more classes of the
      Certificates has terminated other than by expiration of the contract on
      its stated termination date or as a result of all parties completing their
      obligations under such agreement; (ii) any material enhancement specified
      in Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation
      AB has been added with respect to one or more classes of the Certificates;
      or (iii) any existing material enhancement or support specified in Item
      1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB with
      respect to one or more classes of the Certificates has been materially
      amended or modified; and

            (g) with respect to the Trustee, the Master Servicer and the
      Depositor only, a required distribution to Holders of the Certificates is
      not made as of the required Distribution Date under this Agreement.

      Reporting Subcontractor: With respect to the Master Servicer or the
Trustee, any Subcontractor determined by such Person pursuant to Section
11.08(b) to be "participating in the servicing function" within the meaning of
Item 1122 of Regulation AB. References to a Reporting Subcontractor shall refer
only to the Subcontractor of such Person and shall not refer to Subcontractors
generally

      Request for Release: The Request for Release submitted by the Master
Servicer to the Trustee, substantially in the form of Exhibits M and N to this
Agreement, as appropriate.

      Required Insurance Policy: With respect to any Mortgage Loan, any
insurance policy that is required to be maintained from time to time under this
Agreement.

      Residual Certificates: As specified in the Preliminary Statement.

      Responsible Officer: When used with respect to the Trustee, any Vice
President, any Assistant Vice President, the Secretary, any Assistant Secretary,
any Trust Officer or any other officer of the Trustee customarily performing
functions similar to those performed by any of the above designated officers and
also to whom, with respect to a particular matter, such matter is referred
because of such officer's knowledge of and familiarity with the particular
subject.

      Rolling Sixty-Day Delinquency Rate: With respect to any Distribution Date
on or after the Stepdown Date, the average of the Sixty-Day Delinquency Rates
for such Distribution Date and the two immediately preceding Distribution Dates.

                                       42
<PAGE>

      S&P: Standard & Poor's, a division of The McGraw-Hill Companies, Inc. If
S&P is designated as a Rating Agency in the Preliminary Statement, for purposes
of Section 10.05(b) the address for notices to S&P shall be Standard & Poor's,
55 Water Street, New York, New York 10041, Attention: Mortgage Surveillance
Monitoring, or such other address as S&P may hereafter furnish to the Depositor
and the Master Servicer.

      Sarbanes-Oxley Certification: As defined in Section 11.05.

      Scheduled Balances: Not applicable.

      Scheduled Classes: As specified in the Preliminary Statement.

      Scheduled Payment: The scheduled monthly payment on a Mortgage Loan due on
any Due Date allocable to principal and/or interest on such Mortgage Loan which,
unless otherwise specified in this Agreement, shall give effect to any related
Debt Service Reduction and any Deficient Valuation that affects the amount of
the monthly payment due on such Mortgage Loan.

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

      Seller: Countrywide, Park Granada, Park Monaco or Park Sienna, as
applicable.

      Senior Certificates: As specified in the Preliminary Statement.

      Senior Enhancement Percentage: With respect to a Distribution Date on and
after the Stepdown Date, the fraction (expressed as a percentage) (1) the
numerator of which is the excess of (a) the aggregate Stated Principal Balance
of the Mortgage Loans for the preceding Distribution Date over (b) (i) before
the Class Certificate Balances of the Senior Certificates have been reduced to
zero, the sum of the Class Certificate Balances of the Senior Certificates, or
(ii) after the Class Certificate Balances of the Senior Certificates have been
reduced to zero, the Class Certificate Balance of the most senior Class of
Subordinated Certificates outstanding as of the preceding Master Servicer
Advance Date and (2) the denominator of which is the aggregate Stated Principal
Balance of the Mortgage Loans for the preceding Distribution Date.

      Senior Principal Distribution Allocation Amount: For any Distribution
Date, (a) with respect to the Class 1-A Certificates, the Group 1 Senior
Principal Distribution Amount and (b) with respect to the Group 2 Senior
Certificates, the Group 2 Senior Principal Distribution Amount.

      Senior Principal Distribution Target Amount: As to any Distribution Date,
the excess of (x) the aggregate Class Certificate Balance of the Senior
Certificates immediately prior to such Distribution Date, over (y) the lesser of
(i) 84.80% of the aggregate Stated Principal Balance of the Mortgage Loans as of
the Due Date in the month of such Distribution Date (after giving effect to
Principal Prepayments, the principal portion of any Liquidation Proceeds and any
Subsequent Recoveries received in the related Prepayment Period) and (ii) the
aggregate Stated Principal Balance of the Mortgage Loans as of the Due Date in
the month of such Distribution Date (after giving effect to Principal
Prepayments, the principal portion of any Liquidation Proceeds and any
Subsequent Recoveries received in the related Prepayment Period), minus the OC
Floor.

                                        43
<PAGE>

      Servicing Advances: All customary, reasonable and necessary "out of
pocket" costs and expenses incurred in the performance by the Master Servicer of
its servicing obligations, including, but not limited to, the cost of (i) the
preservation, restoration and protection of a Mortgaged Property, (ii) any
expenses reimbursable to the Master Servicer pursuant to Section 3.11 and any
enforcement or judicial proceedings, including foreclosures, (iii) the
management and liquidation of any REO Property and (iv) compliance with the
obligations under Section 3.09.

      Servicing Criteria: The "servicing criteria" set forth in Item 1122(d) of
Regulation AB.

      Servicing Officer: Any officer of the Master Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
name and facsimile signature appear on a list of servicing officers furnished to
the Trustee by the Master Servicer on the Closing Date pursuant to this
Agreement, as such list may from time to time be amended.

      Shift Percentage: Not applicable.

      Sixty-Day Delinquency Rate: With respect to any Distribution Date on or
after the Stepdown Date, a fraction, expressed as a percentage, the numerator of
which is the aggregate Stated Principal Balance of all Mortgage Loans 60 or more
days delinquent as of the close of business on the last day of the calendar
month preceding such Distribution Date (including Mortgage Loans in foreclosure,
bankruptcy and REO Properties) and the denominator of which is the aggregate
Stated Principal Balance for such Distribution Date of the Mortgage Loans as of
the related Due Date (after giving effect to Principal Prepayments, the
principal portion of any Liquidation Proceeds and any Subsequent Recoveries
received in the related Prepayment Period).

      Startup Day: The Closing Date.

      Stated Principal Balance: As to any Mortgage Loan and Due Date, the unpaid
principal balance of such Mortgage Loan as of such Due Date, as specified in the
amortization schedule at the time relating thereto (before any adjustment to
such amortization schedule by reason of any moratorium or similar waiver or
grace period) minus the sum of: (i) any previous partial Principal Prepayments
and the payment of principal due on such Due Date, irrespective of any
delinquency in payment by the related Mortgagor, (ii) Liquidation Proceeds
allocable to principal (other than with respect to any Liquidated Mortgage Loan)
received in the prior calendar month and Principal Prepayments received through
the last day of the related Prepayment Period, in each case, with respect to
that Mortgage Loan and (iii) any Realized Loss previously incurred in connection
with a Deficient Valuation. The Stated Principal Balance of any Mortgage Loan
that becomes a Liquidated Mortgage Loan will be zero on each date following the
Due Period in which such Mortgage Loan becomes a Liquidated Mortgage Loan.

      Stepdown Date: The earlier to occur of: (1) the Distribution Date
immediately following the Distribution Date on which the aggregate Class
Certificate Balance of the Senior Certificates is reduced to zero, and (2) the
later to occur of (x) the Distribution Date in December 2009 and (y) the first
Distribution Date on which the aggregate Class Certificate Balance of the Senior
Certificates (after calculating anticipated distributions on such Distribution
Date) is less than or equal to 84.80% of the aggregate Stated Principal Balance
of the Mortgage Loans as of the Due

                                        44
<PAGE>

Date in the month of that Distribution Date (after giving effect to Principal
Prepayments, the principal portion of any Liquidation Proceeds and any
Subsequent Recoveries received in the Prepayment Period related to that prior
Due Date).

      Stepdown Target Subordination Percentage: With respect to any Class of
Subordinated Certificates, the respective percentage indicated in the following
table:

                                                           Stepdown Target
                                                             Subordination
                                                              Percentage
                                                           ---------------
      Class M-1.....................................             10.80%
      Class M-2.....................................             7.10%
      Class M-3.....................................             5.90%
      Class M-4.....................................             4.70%
      Class M-5.....................................             3.70%
      Class M-6.....................................             2.70%
      Class M-7.....................................             1.70%
      Class M-8.....................................              0.70%

      Streamlined Documentation Mortgage Loan: Any Mortgage Loan originated
pursuant to Countrywide's Streamlined Loan Documentation Program then in effect.
For the purposes of this Agreement, a Mortgagor is eligible for a mortgage
pursuant to Countrywide's Streamlined Loan Documentation Program if that
Mortgagor is refinancing an existing mortgage loan that was originated or
acquired by Countrywide where, among other things, the mortgage loan has not
been more than 30 days delinquent in payment during the previous twelve month
period.

      Strip REMIC: As defined in the Preliminary Statement.

      Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing (as "servicing" is commonly understood by
participants in the mortgage-backed securities market) of Mortgage Loans but
performs one or more discrete functions identified in Item 1122(d) of Regulation
AB with respect to the Mortgage Loans under the direction or authority of the
Master Servicer or a Subservicer or the Trustee, as the case may be.

      Subordinated Certificates: As specified in the Preliminary Statement.

      Subordinated Class Principal Distribution Target Amount: With respect to
any Distribution Date and any Class of Subordinated Certificates and
Distribution Date will equal the excess of: (1) the sum of: (a) the aggregate
Class Certificate Balance of the Senior Certificates (after taking into account
the distribution of the Senior Principal Distribution Amount for such
Distribution Date), (b) the aggregate Class Certificate Balance of any Class(es)
of Subordinated Certificates that are senior to the subject Class (in each case,
after taking into account distribution of the Subordinated Class Principal
Distribution Target Amount(s) for such more senior Class(es) of Certificates for
such Distribution Date), and (c) the Class Certificate Balance of the subject
Class of Subordinated Certificates immediately prior to such Distribution Date
over (2) the lesser of (a) the product of (x) 100% minus the Stepdown Target
Subordination Percentage for the subject Class of Certificates and (y) the
aggregate Stated Principal Balance of

                                       45
<PAGE>

the Mortgage Loans in the Mortgage Pool for such Distribution Date and (b) the
aggregate Stated Principal Balance of the Mortgage Loans in the Mortgage Pool
for such Distribution Date minus the OC Floor; provided, however, that if such
Class of Subordinated Certificates is the only Class of Subordinated
Certificates outstanding on such Distribution Date, that Class will be entitled
to receive the entire remaining Principal Distribution Amount until its Class
Certificate Balance is reduced to zero.

      Subordinate Net Rate Cap: For each Distribution Date, the weighted average
of the Group 1 Net Rate Cap and the Group 2 Net Rate Cap weighted on the basis
of the respective Subordinate Portion of their corresponding Loan Groups.

      Subordinate Portion: For any Distribution Date and Loan Group, the excess
of the aggregate Stated Principal Balance of the Mortgage Loans in such Loan
Group as of the Due Date in the prior month (after giving effect to Principal
Prepayments received in the Prepayment Period related to such prior Due Date)
over the aggregate Class Certificate Balance of the Group 1 Senior Certificates
in the case of Loan Group 1 and the aggregate Class Certificate Balance of the
Group 2 Senior Certificates in the case of Loan Group 2, in each case,
immediately prior to such Distribution Date.

      Subsequent Periodic Rate Cap: As to each Mortgage Loan and the related
Mortgage Note, the provision therein that limits permissible increases and
decreases in the Mortgage Rate on the each Adjustment Date after the first
Adjustment Date for that Mortgage Loan to not more than the amount set forth
therein.

      Subsequent Recoveries: As to any Distribution Date and Loan Group, with
respect to a Liquidated Mortgage Loan in that Loan Group that resulted in a
Realized Loss in a prior calendar month, unexpected amounts received by the
Master Servicer (net of any related expenses permitted to be reimbursed pursuant
to Section 3.08) specifically related to such Liquidated Mortgage Loan after the
classification of such Mortgage Loan as a Liquidated Mortgage Loan.

       Subservicer: Any person to whom the Master Servicer has contracted for the
servicing of all or a portion of the Mortgage Loans pursuant to Section 3.02.

      Substitute Mortgage Loan: A Mortgage Loan substituted by the applicable
Seller for a Deleted Mortgage Loan which must, on the date of such substitution,
as confirmed in a Request for Release, substantially in the form of Exhibit M,
(i) have a Stated Principal Balance, after deduction of the principal portion of
the Scheduled Payment due in the month of substitution, not in excess of, and
not more than 10% less than the Stated Principal Balance of the Deleted Mortgage
Loan; (ii) be accruing interest at a rate no lower than and not more than 1% per
annum higher than, that of the Deleted Mortgage Loan; (iii) have a Loan-to-Value
Ratio no higher than that of the Deleted Mortgage Loan; (iv) have a remaining
term to maturity no greater than (and not more than one year less than that of)
the Deleted Mortgage Loan; (v) have a maximum interest rate no lower than and
not more than 1% per annum higher than, that of the Deleted Mortgage Loan; (vi)
have a minimum interest specified in its related mortgage note not more than 1%
per annum higher or lower than the minimum mortgage rate of the Deleted Mortgage
Loan; (vii) have the same mortgage index reset period and periodic rate cap as
the Deleted Mortgage Loan and a gross margin not more than 1% per annum higher
or lower than that of the Deleted Mortgage Loan; (viii) not be a Cooperative
Loan unless the Deleted Mortgage Loan was

                                       46
<PAGE>

a Cooperative Loan; and (ix) comply with each representation and warranty set
forth in Section 2.03.

      Substitution Adjustment Amount: The meaning ascribed to such term pursuant
to Section 2.03.

      Successful Auction: An auction held pursuant to Section 9.04 at which at
least three Qualified Bidders submitted bids and at least one of those bids was
an Acceptable Bid Amount.

      Supplemental Cut-off Date: With respect to any Supplemental Mortgage Loan,
the later of (i) the date of origination of such Mortgage Loan and (ii) the
first day of the month in which the related Supplemental Transfer Date occurs.

      Supplemental Mortgage Loan: Any Mortgage Loan in each Loan Group other
than an Initial Mortgage Loan in that Loan Group conveyed to the Trust Fund
pursuant to Section 2.01 hereof and to a Supplemental Transfer Agreement, which
Mortgage Loan shall be listed on the revised Mortgage Loan Schedule delivered
pursuant to this Agreement and on Schedule A to such Supplemental Transfer
Agreement. When used with respect to a single Supplemental Transfer Date,
Supplemental Mortgage Loan shall mean a Supplemental Mortgage Loan conveyed to
the Trust Fund on that Supplemental Transfer Date.

       Supplemental Transfer Agreement: A Supplemental Transfer Agreement
substantially in the form of Exhibit P hereto, executed and delivered by the
related Seller or Sellers, the Master Servicer, the Depositor and the Trustee as
provided in Section 2.01 hereof.

      Supplemental Transfer Date: For any Supplemental Transfer Agreement, the
date the related Supplemental Mortgage Loans are transferred to the Trust Fund
pursuant to the related Supplemental Transfer Agreement.

      Swap Account: The separate Eligible Account created and initially
maintained by the Swap Trustee pursuant to Section 4.09.

      Swap Adjustment Rate: For any Distribution Date and Loan Group, a
fraction, (A) the numerator of which is the product of (i) the sum of (a) the
Net Swap Payment payable to the Swap Counterparty under the Swap Contract with
respect to such Distribution Date times a fraction, the numerator of which is
equal to 360 and the denominator of which is equal to the actual number of days
in the related Interest Accrual Period and (b) any Swap Termination Payment
payable to the Swap Counterparty under the Swap Contract for such Distribution
Date (other than a Swap Termination Payment due to a Swap Counterparty Trigger
Event), and (ii) a fraction, the numerator of which is the Interest Funds for
that Loan Group and the denominator of which is the aggregate of the Interest
Funds for both Loan Groups and (B) the denominator of which is equal to the
aggregate Stated Principal Balance of the Mortgage Loans in that Loan Group as
of the Due Date in the prior calendar month (after giving effect to Principal
Prepayments, the principal portion of Liquidation Proceeds and any Subsequent
Recoveries received in the Prepayment Period related to that prior Due Date).

      Swap Contract: With respect to the LIBOR Certificates, the transaction
evidenced by the confirmation (as assigned to the Swap Contract Administrator
pursuant to the Swap Contract Assignment Agreement), a form of which is attached
hereto as Exhibit R.

                                        47
<PAGE>

      Swap Contract Administration Agreement: The swap contract administration
agreement dated as of the Closing Date among Countrywide, the Trustee and the
Swap Contract Administrator, a form of which is attached hereto as Exhibit S-2.

      Swap Contract Administrator: The Bank of New York, in its capacity as swap
contract administrator under the Swap Contract Administration Agreement and its
successors and assigns.

      Swap Contract Assignment Agreement: The assignment agreement dated as of
the Closing Date among Countrywide, the Swap Contract Administrator and the Swap
Counterparty, a form of which is attached hereto as Exhibit S-1.

      Swap Contract Termination Date: The Distribution Date in January 2011.

       Swap Counterparty: Lehman Brothers Special Financing Inc. and its
successors.

      Swap Counterparty Trigger Event: A Swap Termination Payment that is
triggered upon (i) an "Event of Default" under the ISDA Master Agreement with
respect to which the Swap Counterparty is the sole "Defaulting Party" (as
defined in the ISDA Master Agreement) or (ii) a "Termination Event" (other than
an Illegality or a Tax Event (as such terms are defined in the ISDA Master
Agreement)) or "Additional Termination Event" under the ISDA Master Agreement
with respect to which the Swap Counterparty is the sole "Affected Party" (as
defined in the ISDA Master Agreement).

      Swap Termination Payment: The payment payable to either party under the
ISDA Master Agreement due to an early termination of the Swap Contract.

      Swap Trust: The trust fund established by Section 4.09.

      Swap Trustee: The Bank of New York, a New York banking corporation, not in
its individual capacity, but solely in its capacity as trustee for the benefit
of the Holders of the LIBOR Certificates under this Agreement, and any successor
thereto, and any corporation or national banking association resulting from or
surviving any consolidation or merger to which it or its successors may be a
party and any successor trustee as may from time to time be serving as successor
trustee hereunder.

      Tax Matters Person: The person designated as "tax matters person" in the
manner provided under Treasury regulation ss. 1.860F-4(d) and Treasury
regulation ss. 301.6231(a)(7)1. Initially, the Tax Matters Person shall be the
Trustee.

      Tax Matters Person Certificate: The Class A-R Certificate with a
Denomination of $0.01.

      Termination Price: As defined in Section 9.01.

      Terminator: As defined in Section 9.01.

      Transaction Documents: This Agreement, the Swap Contract, the Swap
Administration Agreement, each Supplemental Transfer Agreement and any other
document or agreement entered into in connection with the Trust Fund, the
Certificates or the Mortgage Loans.

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      Transfer: Any direct or indirect transfer or sale of any Ownership
Interest in a Residual Certificate.

      Trigger Event: With respect to a Distribution Date on or after the
Stepdown Date, either a Delinquency Trigger Event or a Cumulative Loss Trigger
Event is in effect with respect to that Distribution Date.

      Trust Fund: The corpus of the trust created under this Agreement
consisting of (i) the Mortgage Loans and all interest and principal received on
or with respect thereto after the Cut-off Date to the extent not applied in
computing the Cut-off Date Principal Balance of the Mortgage Loans; (ii) the
Certificate Account, the Distribution Account, the Pre-funding Account, the
Capitalized Interest Account and the Carryover Reserve Fund and all amounts
deposited therein pursuant to the applicable provisions of this Agreement; (iii)
property that secured a Mortgage Loan and has been acquired by foreclosure,
deed-in-lieu of foreclosure or otherwise; and (iv) all proceeds of the
conversion, voluntary or involuntary, of any of the foregoing.

      Trustee: The Bank of New York and its successors and, if a successor
trustee is appointed under this Agreement, such successor.

      Trustee Advance Rate: With respect to any Advance made by the Trustee
pursuant to Section 4.01(b), a per annum rate of interest determined as of the
date of such Advance equal to the Prime Rate in effect on such date plus 5.00%.

      Trustee Fee: As to any Distribution Date, an amount equal to one-twelfth
of the Trustee Fee Rate multiplied by the Pool Stated Principal Balance with
respect to such Distribution Date.

      Trustee Fee Rate: With respect to each Mortgage Loan, 0.009% per annum.

      Underwriters: As specified in the Preliminary Statement.

      Underwriter's Exemption: Prohibited Transaction Exemption 2002-41, 67 Fed.
Reg. 54487 (2002), as amended (or any successor thereto), or any substantially
similar administrative exemption granted by the U.S. Department of Labor.

      Unpaid Realized Loss Amount: For any Class of LIBOR Certificates, (x) the
portion of the aggregate Applied Realized Loss Amount previously allocated to
that Class remaining unpaid from prior Distribution Dates minus (y) any increase
in the Class Certificate Balance of that Class of Subsequent Recoveries to the
Class Certificate Balance of that Class pursuant to Section 4.02(h).

      Voting Rights: The portion of the voting rights of all of the Certificates
which is allocated to any Certificate. As of any date of determination, (a) 1%
of all Voting Rights shall be allocated to each Class of Notional Amount
Certificates, if any (such Voting Rights to be allocated among the holders of
Certificates of each such Class in accordance with their respective Percentage
Interests), (b) 1% of all Voting Rights shall be allocated to each of the Class
A-R, Class C and Class P Certificates, and (c) the remaining Voting Rights (or
100% of the Voting Rights if there is no Class of Notional Amount Certificates)
shall be allocated among

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Holders of the remaining Classes of Certificates in proportion to the
Certificate Balances of their respective Certificates on such date.

      Weighted Average Adjusted Net Mortgage Rate: As to any Distribution Date,
the average of the Adjusted Net Mortgage Rates on the Mortgage Loans, weighted
on the basis of the Stated Principal Balance of each Mortgage Loan as of the Due
Date in the prior calendar month (after giving effect to Principal Prepayments
received in the Prepayment Period related to that prior Due Date).

      Winning Bidder: With respect to a Successful Auction, the Qualified Bidder
that bids the highest price.

      SECTION 1.02. Certain Interpretive Provisions.

      All terms defined in this Agreement shall have the defined meanings when
used in any certificate, agreement or other document delivered pursuant hereto
unless otherwise defined therein. For purposes of this Agreement and all such
certificates and other documents, unless the context otherwise requires: (a)
accounting terms not otherwise defined in this Agreement, and accounting terms
partly defined in this Agreement to the extent not defined, shall have the
respective meanings given to them under generally accepted accounting
principles; (b) the words "hereof," "herein" and "hereunder" and words of
similar import refer to this Agreement (or the certificate, agreement or other
document in which they are used) as a whole and not to any particular provision
of this Agreement (or such certificate, agreement or document); (c) references
to any Section, Schedule or Exhibit are references to Sections, Schedules and
Exhibits in or to this Agreement, and references to any paragraph, subsection,
clause or other subdivision within any Section or definition refer to such
paragraph, subsection, clause or other subdivision of such Section or
definition; (d) the term "including" means "including without limitation"; (e)
references to any law or regulation refer to that law or regulation as amended
from time to time and include any successor law or regulation; (f) references to
any agreement refer to that agreement as amended from time to time; (g)
references to any Person include that Person's permitted successors and assigns;
and (h) a Mortgage Loan is "30 days delinquent" if any Scheduled Payment has not
been received by the close of business on the day immediately preceding the Due
Date on which the next Scheduled Payment is due. Similarly for "60 days
delinquent," "90 days delinquent" and so on.

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                                   ARTICLE II
                          CONVEYANCE OF MORTGAGE LOANS;
                         REPRESENTATIONS AND WARRANTIES

      SECTION 2.01. Conveyance of Mortgage Loans

            (a) Each Seller, concurrently with the execution and delivery
hereof, hereby sells, transfers, assigns, sets over and otherwise conveys to the
Depositor, without recourse, all its respective right, title and interest in and
to the related Initial Mortgage Loans, including all interest and principal
received or receivable by such Seller, on or with respect to the applicable
Initial Mortgage Loans after the Initial Cut-off Date and all interest and
principal payments on the related Initial Mortgage Loans received prior to the
Initial Cut-off Date in respect of installments of interest and principal due
thereafter, but not including payments of principal and interest due and payable
on such Initial Mortgage Loans, on or before the Initial Cut-off Date. On or
prior to the Closing Date, Countrywide shall deliver to the Depositor or, at the
Depositor's direction, to the Trustee or other designee of the Depositor, the
Mortgage File for each Mortgage Loan listed in the Mortgage Loan Schedule
(except that, in the case of the Delay Delivery Mortgage Loans (which may
include Countrywide Mortgage Loans, Park Granada Mortgage Loans, Park Monaco
Mortgage Loans and Park Sienna Mortgage Loans), such delivery may take place
within thirty (30) days following the Closing Date or twenty (20) days following
the applicable Supplemental Transfer Date, as applicable). Such delivery of the
Mortgage Files shall be made against payment by the Depositor of the purchase
price, previously agreed to by the Sellers and Depositor, for the Mortgage
Loans. With respect to any Initial Mortgage Loan that does not have a first
payment date on or before the Due Date in the month of the first Distribution
Date or any Supplemental Mortgage Loan that does not have a first payment date
on or before the Due Date in the month after the related Supplemental Transfer
Date, Countrywide shall deposit into the Distribution Account on or before the
Distribution Account Deposit Date relating to the first applicable Distribution
Date, an amount equal to one month's interest at the related Adjusted Mortgage
Rate on the Cut-off Date Principal Balance of such Mortgage Loan.

            (b) Immediately upon the conveyance of the Initial Mortgage Loans
referred to in clause (a), the Depositor sells, transfers, assigns, sets over
and otherwise conveys to the Trustee for the benefit of the Certificateholders,
without recourse, all the right, title and interest of the Depositor in and to
the Trust Fund together with the Depositor's right to require each Seller to
cure any breach of a representation or warranty made herein by such Seller or to
repurchase or substitute for any affected Mortgage Loan in accordance herewith.

            (c) In connection with the transfer and assignment set forth in
clause (b) above, the Depositor has delivered or caused to be delivered to the
Trustee (or, in the case of the Delay Delivery Mortgage Loans that are Initial
Mortgage Loans, will deliver or cause to be delivered to the Trustee within
thirty (30) days following the Closing Date and in the case of the Delay
Delivery Mortgage Loans that are Supplemental Mortgage Loans, will deliver or
cause to be delivered to the Trustee within twenty (20) days following the
applicable Supplemental Transfer Date) for the benefit of the Certificateholders
the following documents or instruments with respect to each Mortgage Loan so
assigned:

            (i) (A) the original Mortgage Note endorsed by manual or facsimile
      signature in blank in the following form: "Pay to the order of
      ____________ without

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      recourse," with all intervening endorsements showing a complete chain of
      endorsement from the originator to the Person endorsing the Mortgage Note
      (each such endorsement being sufficient to transfer all right, title and
      interest of the party so endorsing, as noteholder or assignee thereof, in
      and to that Mortgage Note); or

            (B) with respect to any Lost Mortgage Note, a lost note affidavit
      from Countrywide stating that the original Mortgage Note was lost or
      destroyed, together with a copy of such Mortgage Note;

         (ii) except as provided below and for each Mortgage Loan that is not a
      MERS Mortgage Loan, the original recorded Mortgage or a copy of such
      Mortgage, with recording information, (or, in the case of a Mortgage for
      which the related Mortgaged Property is located in the Commonwealth of
      Puerto Rico, a true copy of the Mortgage certified as such by the
      applicable notary) and in the case of each MERS Mortgage Loan, the
      original Mortgage or a copy of such mortgage, with recording information,
      noting the presence of the MIN of the Mortgage Loans and either language
      indicating that the Mortgage Loan is a MOM Loan if the Mortgage Loan is a
      MOM Loan or if the Mortgage Loan was not a MOM Loan at origination, the
      original Mortgage and the assignment thereof to MERS, with evidence of
      recording indicated thereon, or a copy of the Mortgage certified by the
      public recording office in which such Mortgage has been recorded;

         (iii) in the case of each Mortgage Loan that is not a MERS Mortgage
      Loan, a duly executed assignment of the Mortgage or a copy of such
      assignment, with recording information, (which may be included in a
      blanket assignment or assignments), together with, except as provided
      below, all interim recorded assignments of such mortgage or a copy of such
      assignment, with recording information, (each such assignment, when duly
      and validly completed, to be in recordable form and sufficient to effect
      the assignment of and transfer to the assignee thereof, under the Mortgage
      to which the assignment relates); provided that, if the related Mortgage
      has not been returned from the applicable public recording office, such
      assignment of the Mortgage may exclude the information to be provided by
       the recording office; provided, further, that such assignment of Mortgage
      need not be delivered in the case of a Mortgage for which the related
      Mortgaged Property is located in the Commonwealth of Puerto Rico;

         (iv) the original or copies of each assumption, modification, written
      assurance or substitution agreement, if any;

         (v) except as provided below, the original or a copy of lender's title
      policy or a printout of the electronic equivalent and all riders thereto;
      and

         (vi) in the case of a Cooperative Loan, the originals of the following
      documents or instruments:

            (A) The Coop Shares, together with a stock power in blank;

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             (B) The executed Security Agreement;

            (C) The executed Proprietary Lease;

            (D) The executed Recognition Agreement;

            (E) The executed UCC-1 financing statement with evidence of
      recording thereon which have been filed in all places required to perfect
      the applicable Seller's interest in the Coop Shares and the Proprietary
      Lease; and

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

      In addition, in connection with the assignment of any MERS Mortgage Loan,
each Seller agrees that it will cause, at the Trustee's expense, the MERS(R)
System to indicate that the Mortgage Loans sold by such Seller to the Depositor
have been assigned by that Seller to the Trustee in accordance with this
Agreement (and any Supplemental Transfer Agreement, as applicable) for the
benefit of the Certificateholders by including (or deleting, in the case of
Mortgage Loans which are repurchased in accordance with this Agreement) in such
computer files the information required by the MERS(R) System to identify the
series of the Certificates issued in connection with such Mortgage Loans. Each
Seller further agrees that it will not, and will not permit the Master Servicer
to, and the Master Servicer agrees that it will not, alter the information
referenced in this paragraph with respect to any Mortgage Loan sold by such
Seller to the Depositor during the term of this Agreement unless and until such
Mortgage Loan is repurchased in accordance with the terms of this Agreement.

      In the event that in connection with any Mortgage Loan that is not a MERS
Mortgage Loan the Depositor cannot deliver (a) the original recorded Mortgage or
a copy of such mortgage, with recording information, or (b) all interim recorded
assignments or a copy of such assignments, with recording information, or (c)
the lender's title policy or a copy of lender's title policy (together with all
riders thereto) satisfying the requirements of clause (ii), (iii) or (v) above,
respectively, concurrently with the execution and delivery of this Agreement
because such document or documents have not been returned from the applicable
public recording office in the case of clause (ii) or (iii) above, or because
the title policy has not been delivered to either the Master Servicer or the
Depositor by the applicable title insurer in the case of clause (v) above, the
Depositor shall promptly deliver to the Trustee, in the case of clause (ii) or
(iii) above, such original Mortgage or a copy of such mortgage, with recording
information, or such interim assignment or a copy of such assignments, with
recording information, as the case may be, with evidence of recording indicated
thereon upon receipt thereof from the public recording office, or a copy
thereof, certified, if appropriate, by the relevant recording office, but in no
event shall any such delivery of the original Mortgage and each such interim
assignment or a copy thereof, certified, if appropriate, by the relevant
recording office, be made later than one year following the Closing Date, or, in
the case of clause (v) above, no later than 120 days following the Closing Date;
provided, however, in the event the Depositor is unable to deliver by such date
each Mortgage and each such interim assignment by reason of the fact that any
such documents have

                                       53
<PAGE>

not been returned by the appropriate recording office, or, in the case of each
such interim assignment, because the related Mortgage has not been returned by
the appropriate recording office, the Depositor shall deliver such documents to
the Trustee as promptly as possible upon receipt thereof and, in any event,
within 720 days following the Closing Date. The Depositor shall forward or cause
to be forwarded to the Trustee (a) from time to time additional original
documents evidencing an assumption or modification of a Mortgage Loan and (b)
any other documents required to be delivered by the Depositor or the Master
Servicer to the Trustee. In the event that the original Mortgage is not
delivered and in connection with the payment in full of the related Mortgage
Loan and the public recording office requires the presentation of a "lost
instruments affidavit and indemnity" or any equivalent document, because only a
copy of the Mortgage can be delivered with the instrument of satisfaction or
reconveyance, the Master Servicer shall execute and deliver or cause to be
executed and delivered such a document to the public recording office. In the
case where a public recording office retains the original recorded Mortgage or
in the case where a Mortgage is lost after recordation in a public recording
office, Countrywide shall deliver to the Trustee a copy of such Mortgage
certified by such public recording office to be a true and complete copy of the
original recorded Mortgage.

      As promptly as practicable subsequent to such transfer and assignment, and
in any event, within one hundred twenty (120) days after such transfer and
assignment, the Trustee shall (A) as the assignee thereof, affix the following
language to each assignment of Mortgage: "CWALT, Inc. Series 2006-OC10, The Bank
of New York as trustee", (B) cause such assignment to be in proper form for
recording in the appropriate public office for real property records and (C)
cause to be delivered for recording in the appropriate public office for real
property records the assignments of the Mortgages to the Trustee, except that
(i) with respect to any assignments of Mortgage as to which the Trustee has not
received the information required to prepare such assignment in recordable form,
the Trustee's obligation to do so and to deliver the same for such recording
shall be as soon as practicable after receipt of such information and in any
event within thirty (30) days after receipt thereof and (ii) the Trustee need
not cause to be recorded any assignment which relates to a Mortgage Loan, the
Mortgaged Property and Mortgage File relating to which are located in any
jurisdiction (including Puerto Rico) under the laws of which the recordation of
such assignment is not necessary to protect the Trustee's and the
Certificateholders' interest in the related Mortgage Loan as evidenced by an
opinion of counsel delivered by Countrywide to the Trustee within 90 days of the
Closing Date (which opinion may be in the form of a "survey" opinion and is not
required to be delivered by counsel admitted to practice law in the jurisdiction
as to which such legal opinion applies).

      In the case of Mortgage Loans that have been prepaid in full as of the
Closing Date, the Depositor, in lieu of delivering the above documents to the
Trustee, will deposit in the Certificate Account the portion of such payment
that is required to be deposited in the Certificate Account pursuant to Section
3.05.

      Notwithstanding anything to the contrary in this Agreement, within thirty
(30) days after the Closing Date with respect to the Initial Mortgage Loans,
Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna) shall either (i) deliver to the Depositor, or at the Depositor's
direction, to the Trustee or other designee of the Depositor the Mortgage File
as required pursuant to this Section 2.01 for each Delay Delivery Mortgage Loan
or (ii) either (A) substitute a Substitute Mortgage Loan for the Delay Delivery
Mortgage Loan or (B) repurchase the Delay Delivery Mortgage Loan, which
substitution or repurchase shall be

                                       54
<PAGE>

accomplished in the manner and subject to the conditions set forth in Section
2.03 (treating each Delay Delivery Mortgage Loan as a Deleted Mortgage Loan for
purposes of such Section 2.03); provided, however, that if Countrywide fails to
deliver a Mortgage File for any Delay Delivery Mortgage Loan within the thirty
(30)-day period provided in the prior sentence, Countrywide (on its own behalf
and on behalf of Park Granada, Park Monaco and Park Sienna) shall use its best
reasonable efforts to effect a substitution, rather than a repurchase of, such
Deleted Mortgage Loan and provided further that the cure period provided for in
Section 2.02 or in Section 2.03 shall not apply to the initial delivery of the
Mortgage File for such Delay Delivery Mortgage Loan, but rather Countrywide (on
its own behalf and on behalf of Park Granada, Park Monaco and Park Sienna) shall
have five (5) Business Days to cure such failure to deliver. At the end of such
thirty (30)-day period the Trustee shall send a Delay Delivery Certification for
the Delay Delivery Mortgage Loans delivered during such thirty (30)-day period
in accordance with the provisions of Section 2.02.

            (d) Subject to the execution and delivery of the related
Supplemental Transfer Agreement as provided in Section 2.01(e) hereof and the
terms and conditions of this Agreement, each Seller sells, transfers, assigns,
sets over and otherwise conveys to the Depositor, without recourse, on each
Supplemental Transfer Date, with respect to each Supplemental Mortgage Loan sold
by such Seller to the Depositor, all the right, title and interest of that
Seller in and to the Supplemental Mortgage Loans sold by it identified in such
Supplemental Transfer Agreement, including all interest and principal received
and receivable by such Seller on or with respect to the related Supplemental
Mortgage Loans on and after the related Supplemental Cut-off Date (to the extent
not applied in computing the Cut-off Date Principal Balance thereof) or
deposited into the Certificate Account by the related Seller, other than
principal and interest due on such Supplemental Mortgage Loans prior to the
related Supplemental Cut-off Date.

      Immediately upon the conveyance of the Supplemental Mortgage Loans
referred to in the preceding paragraph, the Depositor sells, transfers, assigns,
sets over and otherwise conveys to the Trustee for benefit of the
Certificateholders, without recourse, all right title and interest in all of the
Supplemental Mortgage Loans.

      Each Seller has entered into this Agreement in consideration for the
purchase of the Mortgage Loans sold by such Seller to the Depositor and has
agreed to take the actions specified herein. The Depositor, concurrently with
the execution and delivery of this Agreement, hereby sells, transfers, assigns
and otherwise conveys to the Trustee for the use and benefit of the
Certificateholders, without recourse, all right title and interest in the
portion of the Trust Fund not otherwise conveyed to the Trust Fund pursuant to
Sections 2.01(a) or (b).

            (e) Upon five (5) Business Days written notice to the Trustee, the
Depositor, the Master Servicer (if the Master Servicer is not a Seller) and the
Rating Agencies, on any other Business Day during the Funding Period designated
by Countrywide, Park Granada, Park Monaco and Park Sienna, if applicable, the
Depositor and the Trustee shall complete, execute and deliver a Supplemental
Transfer Agreement so long as no Rating Agency has provided notice that the
execution and delivery of such Supplemental Transfer Agreement will result in a
reduction or withdrawal of the any ratings assigned to the Certificates. After
the execution and delivery of such Supplemental Transfer Agreement, on the
Supplemental Transfer Date, the Trustee shall set aside in the Pre-funding
Account an amount equal to the Aggregate Supplemental Purchase Amount.

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<PAGE>

      The transfer of Supplemental Mortgage Loans and the other property and
rights relating to them on a Supplemental Transfer Date is subject to the
satisfaction of each of the following conditions:


                  (i) each Supplemental Mortgage Loan conveyed on such
      Supplemental Transfer Date satisfies the representations and warranties
      applicable to it under this Agreement; provided, however, that with
      respect to a breach of a representation and warranty with respect to a
      Supplemental Mortgage Loan, the obligation under Section 2.03(c) of this
      Agreement of Countrywide, Park Granada, Park Monaco and Park Sienna, if
      applicable, to cure, repurchase or replace such Supplemental Mortgage Loan
      shall constitute the sole remedy against such Seller respecting such
      breach available to Certificateholders, the Depositor or the Trustee;

                  (ii) the Trustee, the Underwriter and the Rating Agencies are
      provided with an Opinion of Counsel or Opinions of Counsel with respect to
      the tax treatment of the Trust Fund, to be delivered as provided pursuant
      to Section 2.01(f);

                  (iii) the Rating Agencies and the Underwriter are provided
      with an Opinion of Counsel or Opinions of Counsel with respect to the
      validity of the conveyance of the Supplemental Mortgage Loans conveyed on
      such Supplemental Transfer Date, to be delivered as provided pursuant to
       Section 2.01(f);

                  (iv) the execution and delivery of such Supplemental Transfer
      Agreement or conveyance of the related Supplemental Mortgage Loans does
      not result in a reduction or withdrawal of any ratings assigned to the
       Certificates by the Rating Agencies;

                  (v) the Supplemental Mortgage Loans conveyed on such
      Supplemental Transfer Date were selected in a manner reasonably believed
      not to be adverse to the interests of the Certificateholders;

                  (vi) no Supplemental Mortgage Loan conveyed on such
      Supplemental Transfer date was 30 or more days delinquent;

                  (vii) following the conveyance of the Supplemental Mortgage
      Loans on such Supplemental Transfer Date to the Trust Fund, the
      characteristics of the Mortgage Loans will comply with the Pool
      Characteristics (including the permitted variances listed therein);
      provided, that for the purpose of making these calculations, the
      characteristics for any Initial Mortgage Loan made will be taken as of the
      Initial Cut-off Date and the characteristics for any Supplemental Mortgage
      Loan will be taken as of the related Supplemental Cut-off Date;

                  (ix) none of the Sellers or the Depositor shall be insolvent
      or shall be rendered insolvent as a result of such transfer; and

                  (x) the Depositor shall have delivered to the Trustee an
      Officer's Certificate confirming the satisfaction of each of these
      conditions precedent.

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<PAGE>

      The Trustee shall not be required to investigate or otherwise verify
compliance with these conditions, except for its own receipt of documents
specified above, and shall be entitled to rely on the required Officer's
Certificate.

            (f) Within seven Business Days after each Supplemental Transfer
Date, upon (1) delivery to the Trustee by the Depositor or Countrywide of the
Opinions of Counsel referred to in Sections 2.01(e)(ii) and (iii), (2) delivery
to the Trustee by Countrywide of a revised Mortgage Loan Schedule reflecting the
Supplemental Mortgage Loans conveyed on such Supplemental Transfer Date to the
Loan Group into which each Supplement Mortgage Loan was conveyed and (3)
delivery to the Trustee by the Depositor of an Officer's Certificate confirming
the satisfaction of each of the conditions precedent set forth in this Section
2.01(f), the Trustee shall pay to each Seller the Aggregate Supplemental
Transfer Amount for such Loan Group used to purchase Supplemental Mortgage Loans
for such Loan Group from such Seller from those funds that were set aside in the
Pre-funding Account pursuant to Section 2.01(e). The positive difference, if
any, between the Aggregate Supplemental Transfer Amount for such Loan Group and
the Aggregate Supplemental Purchase Amount for such Loan Group shall be
reinvested by the Trustee in the Pre-funding Account and shall remain designated
as a portion of the Pre-funded Amount allocated to such Loan Group.

            (g) The Trustee shall not be required to investigate or otherwise
verify compliance with the conditions set forth in the preceding paragraph,
except for its own receipt of documents specified above, and shall be entitled
to rely on the required Officer's Certificate.

      Within thirty days after the final Supplemental Transfer Date, the
Depositor shall deliver to the Trustee a letter of a nationally recognized firm
of independent public accountants stating whether or not the Supplemental
Mortgage Loans conveyed on such Supplemental Transfer Date conform to the
characteristics in Section 2.01(e)(vi), (vii) and (viii) for that Loan Group.

            (h) Neither the Depositor nor the Trust will acquire or hold any
Mortgage Loan that would violate the representations made by Countrywide set
forth in clause (50) of Schedule III-A hereto.

      SECTION 2.02. Acceptance by Trustee of the Mortgage Loans.

      (a) The Trustee acknowledges receipt of the documents identified in the
Initial Certification in the form annexed hereto as Exhibit F-1 (an "Initial
Certification (Initial Mortgage Loans)") and declares that it holds and will
hold such documents and the other documents delivered to it constituting the
Mortgage Files, and that it holds or will hold such other assets as are included
in the Trust Fund, in trust for the exclusive use and benefit of all present and
future Certificateholders. The Trustee acknowledges that it will maintain
possession of the Mortgage Notes in the State of California, unless otherwise
permitted by the Rating Agencies.

      The Trustee agrees to execute and deliver on the Closing Date to the
Depositor, the Master Servicer and Countrywide (on its own behalf and on behalf
of Park Granada, Park Monaco and Park Sienna) an Initial Certification in the
form annexed to this Agreement as Exhibit F-1. Based on its review and
examination, and only as to the documents identified in such Initial
Certification, the Trustee acknowledges that such documents appear regular on
their face and relate to the Initial Mortgage Loans. The Trustee shall be under
no duty or obligation to

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<PAGE>

inspect, review or examine said documents, instruments, certificates or other
papers to determine that the same are genuine, enforceable or appropriate for
the represented purpose or that they have actually been recorded in the real
estate records or that they are other than what they purport to be on their
face.

      On or about the thirtieth (30th) day after the Closing Date, the Trustee
shall deliver to the Depositor, the Master Servicer and Countrywide (on its own
behalf and on behalf of Park Granada, Park Monaco and Park Sienna) a Delay
Delivery Certification with respect to the Initial Mortgage Loans in the form
annexed hereto as Exhibit G-1 (a "Delay Delivery Certification (Initial Mortgage
Loans)"), with any applicable exceptions noted thereon.

      Not later than 90 days after the Closing Date, the Trustee shall deliver
to the Depositor, the Master Servicer and Countrywide (on its own behalf and on
behalf of Park Granada, Park Monaco and Park Sienna) a Final Certification with
respect to the Initial Mortgage Loans in the form annexed hereto as Exhibit H-1
(a "Final Certification (Initial Mortgage Loans)"), with any applicable
exceptions noted thereon.

      If, in the course of such review, the Trustee finds any document
constituting a part of a Mortgage File that does not meet the requirements of
Section 2.01, the Trustee shall list such as an exception in the Final
Certification; provided, however that the Trustee shall not make any
determination as to whether (i) any endorsement is sufficient to transfer all
right, title and interest of the party so endorsing, as noteholder or assignee
thereof, in and to that Mortgage Note or (ii) any assignment is in recordable
form or is sufficient to effect the assignment of and transfer to the assignee
thereof under the mortgage to which the assignment relates. Countrywide (on its
own behalf and on behalf of Park Granada, Park Monaco and Park Sienna) shall
promptly correct or cure such defect within 90 days from the date it was so
notified of such defect and, if Countrywide does not correct or cure such defect
within such period, Countrywide (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna) shall either (a) substitute for the
related Mortgage Loan a Substitute Mortgage Loan, which substitution shall be
accomplished in the manner and subject to the conditions set forth in Section
2.03, or (b) purchase such Mortgage Loan from the Trustee within 90 days from
the date Countrywide (on its own behalf and on behalf of Park Granada, Park
Monaco and Park Sienna) was notified of such defect in writing at the Purchase
Price of such Mortgage Loan; provided, however, that in no event shall such
substitution or purchase occur more than 540 days from the Closing Date, except
that if the substitution or purchase of a Mortgage Loan pursuant to this
provision is required by reason of a delay in delivery of any documents by the
appropriate recording office, and there is a dispute between either the Master
Servicer or Countrywide (on its own behalf and on behalf of Park Granada, Park
Monaco and Park Sienna) and the Trustee over the location or status of the
recorded document, then such substitution or purchase shall occur within 720
days from the Closing Date. The Trustee shall deliver written notice to each
Rating Agency within 270 days from the Closing Date indicating each Mortgage
Loan (a) that has not been returned by the appropriate recording office or (b)
as to which there is a dispute as to location or status of such Mortgage Loan.
Such notice shall be delivered every 90 days thereafter until the related
Mortgage Loan is returned to the Trustee. Any such substitution pursuant to (a)
above or purchase pursuant to (b) above shall not be effected prior to the
delivery to the Trustee of the Opinion of Counsel required by Section 2.05, if
any, and any substitution pursuant to (a) above shall not be effected prior to
the additional delivery to the Trustee of a Request for Release substantially in
the form of Exhibit N. No substitution is permitted to be made in any calendar

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<PAGE>

month after the Determination Date for such month. The Purchase Price for any
such Mortgage Loan shall be deposited by Countrywide (on its own behalf and on
behalf of Park Granada, Park Monaco and Park Sienna) in the Certificate Account
on or prior to the Distribution Account Deposit Date for the Distribution Date
in the month following the month of repurchase and, upon receipt of such deposit
and certification with respect thereto in the form of Exhibit N hereto, the
Trustee shall release the related Mortgage File to Countrywide (on its own
behalf and on behalf of Park Granada, Park Monaco and Park Sienna) and shall
execute and deliver at Countrywide's (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna) request such instruments of transfer or
assignment prepared by Countrywide, in each case without recourse, as shall be
necessary to vest in Countrywide (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna), or its designee, the Trustee's interest
in any Mortgage Loan released pursuant hereto. If pursuant to the foregoing
provisions Countrywide (on its own behalf and on behalf of Park Granada, Park
Monaco and Park Sienna) repurchases an Initial Mortgage Loan that is a MERS
Mortgage Loan, the Master Servicer shall either (i) cause MERS to execute and
deliver an assignment of the Mortgage in recordable form to transfer the
Mortgage from MERS to Countrywide (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna) or its designee and shall cause such
Mortgage to be removed from registration on the MERS(R) System in accordance
with MERS' rules and regulations or (ii) cause MERS to designate on the MERS(R)
System Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco
and Park Sienna) or its designee as the beneficial holder of such Mortgage Loan.

            (b) Upon delivery of the Supplemental Mortgage Loans pursuant to a
Supplemental Transfer Agreement, the Trustee shall acknowledge receipt of the
documents identified in any Supplemental Certification in the form annexed
hereto as Exhibit F-2 (an "Initial Certification (Supplemental Mortgage Loans)")
and declare that it will hold such documents and the other documents delivered
to it constituting the Mortgage Files, and that it will hold such other assets
as are included in the Trust Fund, in trust for the exclusive use and benefit of
all present and future Certificateholders. The Trustee acknowledges that it will
maintain possession of the Mortgage Notes in the State of California, unless
otherwise permitted by the Rating Agencies.

            The Trustee agrees to execute and deliver on the Supplemental
Transfer Date to the Depositor, the Master Servicer and Countrywide (on its own
behalf and on behalf of Park Granada, Park Monaco and Park Sienna) a
Supplemental Certification in the form annexed hereto as Exhibit F-2. Based on
its review and examination, and only as to the documents identified in such
Supplemental Certification, the Trustee shall acknowledge that such documents
appear regular on their face and relate to such Supplemental Mortgage Loan. The
Trustee shall be under no duty or obligation to inspect, review or examine said
documents, instruments, certificates or other papers to determine that the same
are genuine, enforceable or appropriate for the represented purpose or that they
have actually been recorded in the real estate records or that they are other
than what they purport to be on their face.

            On or about the twentieth (20th) day after the Supplemental Transfer
Date, the Trustee shall deliver to the Depositor, the Master Servicer and
Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna) a Delay Delivery Certification with respect to the Supplemental
Mortgage Loans in the form annexed hereto as Exhibit G-2 (a

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<PAGE>

"Delay Delivery Certification (Supplemental Mortgage Loans)"), with any
applicable exceptions noted thereon.

            Not later than 90 days after the final Supplemental Transfer Date,
the Trustee shall deliver to the Depositor, the Master Servicer and Countrywide
(on its own behalf and on behalf of Park Granada, Park Monaco and Park Sienna) a
Final Certification with respect to the Supplemental Mortgage Loans in the form
annexed hereto as Exhibit H-2 (a "Final Certification (Supplemental Mortgage
Loans)"), with any applicable exceptions noted thereon.

            (c) If, in the course of such review of the Mortgage Files relating
to the Supplemental Mortgage Loans, the Trustee finds any document constituting
a part of a Mortgage File which does not meet the requirements of Section 2.01,
the Trustee shall list such as an exception in the Final Certification;
provided, however that the Trustee shall not make any determination as to
whether (i) any endorsement is sufficient to transfer all right, title and
interest of the party so endorsing, as noteholder or assignee thereof, in and to
that Mortgage Note or (ii) any assignment is in recordable form or is sufficient
to effect the assignment of and transfer to the assignee thereof under the
mortgage to which the assignment relates. Countrywide (on its own behalf and on
behalf of Park Granada, Park Monaco and Park Sienna) shall promptly correct or
cure such defect within 90 days from the date it was so notified of such defect
and, if Countrywide does not correct or cure such defect within such period,
Countrywide (on its own behalf and on behalfof Park Granada, Park Monaco and
Park Sienna) shall either (a) substitute for the related Mortgage Loan a
Substitute Mortgage Loan, which substitution shall be accomplished in the manner
and subject to the conditions set forth in Section 2.03, or (b) purchase such
Mortgage Loan from the Trustee within 90 days from the date Countrywide (on its
own behalf and on behalf of Park Granada, Park Monaco and Park Sienna) was
notified of such defect in writing at the Purchase Price of such Mortgage Loan;
provided, however, that in no event shall such substitution or purchase occur
more than 540 days from the Closing Date, except that if the substitution or
purchase of a Mortgage Loan pursuant to this provision is required by reason of
a delay in delivery of any documents by the appropriate recording office, and
there is a dispute between either the Master Servicer or Countrywide (on its own
behalf and on behalf of Park Granada, Park Monaco and Park Sienna) and the
Trustee over the location or status of the recorded document, then such
substitution or purchase shall occur within 720 days from the Closing Date. The
Trustee shall deliver written notice to each Rating Agency within 270 days from
the Closing Date indicating each Mortgage Loan (a) which has not been returned
by the appropriate recording office or (b) as to which there is a dispute as to
location or status of such Mortgage Loan. Such notice shall be delivered every
90 days thereafter until the related Mortgage Loan is returned to the Trustee.
Any such substitution pursuant to (a) above or purchase pursuant to (b) above
shall not be effected prior to the delivery to the Trustee of the Opinion of
Counsel required by Section 2.05 hereof, if any, and any substitution pursuant
to (a) above shall not be effected prior to the additional delivery to the
Trustee of a Request for Release substantially in the form of Exhibit N. No
substitution is permitted to be made in any calendar month after the
Determination Date for such month. The Purchase Price for any such Mortgage Loan
shall be deposited by Countrywide (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna) in the Certificate Account on or prior to
the Distribution Account Deposit Date for the Distribution Date in the month
following the month of repurchase and, upon receipt of such deposit and
certification with respect thereto in the form of Exhibit N hereto, the Trustee
shall release the related Mortgage File to Countrywide (on its own behalf and on
behalf

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<PAGE>

of Park Granada, Park Monaco and Park Sienna) and shall execute and deliver at
Countrywide's (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna) request such instruments of transfer or assignment prepared by
Countrywide, in each case without recourse, as shall be necessary to vest in
Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna), or a designee, the Trustee's interest in any Mortgage Loan
released pursuant hereto. If pursuant to the foregoing provisions Countrywide
(on its own behalf and on behalf of Park Granada, Park Monaco and Park Sienna)
repurchases a Supplemental Mortgage Loan that is a MERS Mortgage Loan, the
Master Servicer shall either (i) cause MERS to execute and deliver an assignment
of the Mortgage in recordable form to transfer the Mortgage from MERS to
Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna) and shall cause such Mortgage to be removed from registration on
the MERS(R) System in accordance with MERS' rules and regulations or (ii) cause
MERS to designate on the MERS(R) System Countrywide (on its own behalf and on
behalf of Park Granada, Park Monaco and Park Sienna) or its designee as the
beneficial holder of such Mortgage Loan.

      (d) The Trustee shall retain possession and custody of each Mortgage File
in accordance with and subject to the terms and conditions set forth in this
Agreement. The Master Servicer shall promptly deliver to the Trustee, upon the
execution or receipt thereof, the originals of such other documents or
instruments constituting the Mortgage File as come into the possession of the
Master Servicer from time to time.

      (e) It is understood and agreed that the respective obligations of each
Seller to substitute for or to purchase any Mortgage Loan sold to the Depositor
by it which does not meet the requirements of Section 2.01 above shall
constitute the sole remedy respecting such defect available to the Trustee, the
Depositor and any Certificateholder against that Seller.

      SECTION 2.03. Representations, Warranties and Covenants of the Sellers and
                    Master Servicer.

            (a) Countrywide hereby makes the representations and warranties set
forth in (i) Schedule II-A, Schedule II-B, Schedule II-C and Schedule II-D
hereto, and by this reference incorporated herein, to the Depositor, the Master
Servicer and the Trustee, as of the Closing Date, (ii) Schedule III-A hereto,
and by this reference incorporated herein, to the Depositor, the Master Servicer
and the Trustee, as of the Closing Date, or if so specified therein, as of the
Initial Cut-off Date with respect to all of the Initial Mortgage Loans and as of
the related Supplemental Cut-off Date with respect to all of the Supplemental
Mortgage Loans, and (iii) Schedule III-B hereto, and by this reference
incorporated herein, to the Depositor, the Master Servicer and the Trustee, as
of the Closing Date, or if so specified therein, as of the Initial Cut-off Date
with respect to the Initial Mortgage Loans that are Countrywide Mortgage Loans
and as of the related Supplemental Cut-off Date with respect to the Supplemental
Mortgage Loans that are Countrywide Mortgage Loans. Park Granada hereby makes
the representations and warranties set

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<PAGE>

forth in (i) Schedule II-B hereto, and by this reference incorporated herein, to
the Depositor, the Master Servicer and the Trustee, as of the Closing Date and
(ii) Schedule III-C hereto, and by this reference incorporated herein, to the
Depositor, the Master Servicer and the Trustee, as of the Closing Date, or if so
specified therein, as of the Initial Cut-off Date with respect to the Initial
Mortgage Loans that are Park Granada Mortgage Loans and as of the related
Supplemental Cut-off Date with respect to the Supplemental Mortgage Loans that
are Park Granada Mortgage Loans. Park Monaco hereby makes the representations
and warranties set forth in (i) Schedule II-C hereto, and by this reference
incorporated herein, to the Depositor, the Master Servicer and the Trustee, as
of the Closing Date and (ii) Schedule III-D hereto, and by this reference
incorporated herein, to the Depositor, the Master Servicer and the Trustee, as
of the Closing Date, or if so specified therein, as of the Initial Cut-off Date
with respect to the Initial Mortgage Loans that are Park Monaco Mortgage Loans
and as of the related Supplemental Cut-off Date with respect to the Supplemental
Mortgage Loans that are Park Monaco Mortgage Loans. Park Sienna hereby makes the
representations and warranties set forth in (i) Schedule II-D hereto, and by
this reference incorporated herein, to the Depositor, the Master Servicer and
the Trustee, as of the Closing Date and (ii) Schedule III-E hereto, and by this
reference incorporated herein, to the Depositor, the Master Servicer and the
Trustee, as of the Closing Date, or if so specified therein, as of the Initial
Cut-off Date with respect to the Initial Mortgage Loans that are Park Sienna
Mortgage Loans and as of the related Supplemental Cut-off Date with respect to
the Supplemental Mortgage Loans that are Park Sienna Mortgage Loans.

      (b) The Master Servicer hereby makes the representations and warranties
set forth in Schedule IV hereto, and by this reference incorporated herein, to
the Depositor and the Trustee, as of the Closing Date.

      (c) Upon discovery by any of the parties hereto of a breach of a
representation or warranty with respect to a Mortgage Loan made pursuant to
Section 2.03(a) or a breach of a representation or warranty with respect to a
Supplemental Mortgage Loan under Section 2.01(e)(i) that materially and
adversely affects the interests of the Certificateholders in that Mortgage Loan,
the party discovering such breach shall give prompt notice thereof to the other
parties, the NIM Insurer and the Swap Counterparty. Each Seller hereby covenants
that within 90 days of the earlier of its discovery or its receipt of written
notice from any party of a breach of any representation or warranty with respect
to a Mortgage Loan sold by it pursuant to Section 2.03(a) and with respect to a
breach of a representation and warranty with respect to a Supplemental Mortgage
Loan sold by it under Section 2.01(e)(i) that materially and adversely affects
the interests of the Certificateholders in that Mortgage Loan, it shall cure
such breach in all material respects, and if such breach is not so cured, shall,
(i) if such 90-day period expires prior to the second anniversary of the Closing
Date, remove such Mortgage Loan (a "Deleted Mortgage Loan") from the Trust Fund
and substitute in its place a Substitute Mortgage Loan, in the manner and
subject to the conditions set forth in this Section; or (ii) repurchase the
affected Mortgage Loan or Mortgage Loans from the Trustee at the Purchase Price
in the manner set forth below; provided, however, that any such substitution
pursuant to (i) above shall not be effected prior to the delivery to the Trustee
of the Opinion of Counsel required by Section 2.05, if any, and any such
substitution pursuant to (i) above shall not be effected prior to the additional
delivery to the Trustee of a Request for Release substantially in the form of
Exhibit N and the Mortgage File for any such Substitute Mortgage Loan. The
Seller repurchasing a Mortgage Loan pursuant to this Section 2.03(c) shall
promptly reimburse the Master Servicer and the Trustee for any expenses
reasonably incurred by the Master Servicer or the Trustee in respect of
enforcing the remedies for such breach. With respect to the representations and
warranties described in this Section which are made to the best of a Seller's
knowledge, if it is discovered by either the Depositor, a Seller or the Trustee
that the substance of such representation and warranty is inaccurate and such
inaccuracy materially and adversely affects the value of the related Mortgage
Loan or the interests of the Certificateholders therein, notwithstanding that
Seller's lack of knowledge with respect to the substance of such representation
or warranty, such

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<PAGE>

inaccuracy shall be deemed a breach of the applicable representation or
warranty. Any breach of a representation set forth in clauses (45) through (64)
of Schedule III-A with respect to a Mortgage Loan in Loan Group 1 shall be
deemed to materially and adversely affect the Certificateholders.

      With respect to any Substitute Mortgage Loan or Loans sold to the
Depositor by a Seller, Countrywide (on its own behalf and on behalf of Park
Granada, Park Monaco and Park Sienna) shall deliver to the Trustee for the
benefit of the Certificateholders the Mortgage Note, the Mortgage, the related
assignment of the Mortgage, and such other documents and agreements as are
required by Section 2.01, with the Mortgage Note endorsed and the Mortgage
assigned as required by Section 2.01. No substitution is permitted to be made in
any calendar month after the Determination Date for such month. Scheduled
Payments due with respect to Substitute Mortgage Loans in the month of
substitution shall not be part of the Trust Fund and will be retained by the
related Seller on the next succeeding Distribution Date. For the month of
substitution, distributions to Certificateholders will include the monthly
payment due on any Deleted Mortgage Loan for such month and thereafter that
Seller shall be entitled to retain all amounts received in respect of such
Deleted Mortgage Loan. The Master Servicer shall amend the Mortgage Loan
Schedule for the benefit of the Certificateholders to reflect the removal of
such Deleted Mortgage Loan and the substitution of the Substitute Mortgage Loan
or Loans and the Master Servicer shall deliver the amended Mortgage Loan
Schedule to the Trustee. Upon such substitution, the Substitute Mortgage Loan or
Loans shall be subject to the terms of this Agreement in all respects, and the
related Seller shall be deemed to have made with respect to such Substitute
Mortgage Loan or Loans, as of the date of substitution, the representations and
warranties made pursuant to Section 2.03(a) with respect to such Mortgage Loan.
Upon any such substitution and the deposit to the Certificate Account of the
amount required to be deposited therein in connection with such substitution as
described in the following paragraph, the Trustee shall release the Mortgage
File held for the benefit of the Certificateholders relating to such Deleted
Mortgage Loan to the related Seller and shall execute and deliver at such
Seller's direction such instruments of transfer or assignment prepared by
Countrywide (on its own behalf and on behalf of Park Granada, Park Monaco and
Park Sienna), in each case without recourse, as shall be necessary to vest title
in that Seller, or its designee, the Trustee's interest in any Deleted Mortgage
Loan substituted for pursuant to this Section 2.03.

      For any month in which a Seller substitutes one or more Substitute
Mortgage Loans for one or more Deleted Mortgage Loans, the Master Servicer will
determine the amount (if any) by which the aggregate principal balance of all
Substitute Mortgage Loans sold to the Depositor by that Seller as of the date of
substitution is less than the aggregate Stated Principal Balance of all Deleted
Mortgage Loans repurchased by that Seller (after application of the scheduled
principal portion of the monthly payments due in the month of substitution). The
amount of such shortage (the "Substitution Adjustment Amount") plus an amount
equal to the aggregate of any unreimbursed Advances with respect to such Deleted
Mortgage Loans shall be deposited in the Certificate Account by Countrywide (on
its own behalf and on behalf of Park Granada, Park Monaco and Park Sienna) on or
before the Distribution Account Deposit Date for the Distribution Date in the
month succeeding the calendar month during which the related Mortgage Loan
became required to be purchased or replaced hereunder.

      In the event that a Seller shall have repurchased a Mortgage Loan, the
Purchase Price therefor shall be deposited in the Certificate Account pursuant
to Section 3.05 on or before the

                                        63
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Distribution Account Deposit Date for the Distribution Date in the month
following the month during which that Seller became obligated hereunder to
repurchase or replace such Mortgage Loan and upon such deposit of the Purchase
Price, the delivery of the Opinion of Counsel required by Section 2.05 and
receipt of a Request for Release in the form of Exhibit N hereto, the Trustee
shall release the related Mortgage File held for the benefit of the
Certificateholders to such Person, and the Trustee shall execute and deliver at
such Person's direction such instruments of transfer or assignment prepared by
such Person, in each case without recourse, as shall be necessary to transfer
title from the Trustee. It is understood and agreed that the obligation under
this Agreement of any Person to cure, repurchase or replace any Mortgage Loan as
to which a breach has occurred and is continuing shall constitute the sole
remedy against such Persons respecting such breach available to
Certificateholders, the Depositor or the Trustee on their behalf.

      The representations and warranties made pursuant to this Section 2.03
shall survive delivery of the respective Mortgage Files to the Trustee for the
benefit of the Certificateholders.

      SECTION 2.04. Representations and Warranties of the Depositor as to the
                    Mortgage Loans.

      The Depositor hereby represents and warrants to the Trustee with respect
to each Mortgage Loan as of the date of this Agreement or such other date set
forth in this Agreement that as of the Closing Date, and following the transfer
of the Mortgage Loans to it by each Seller, the Depositor had good title to the
Mortgage Loans and the Mortgage Notes were subject to no offsets, defenses or
counterclaims.

       The Depositor hereby assigns, transfers and conveys to the Trustee all of
its rights with respect to the Mortgage Loans including, without limitation, the
representations and warranties of each Seller made pursuant to Section 2.03(a),
together with all rights of the Depositor to require a Seller to cure any breach
thereof or to repurchase or substitute for any affected Mortgage Loan in
accordance with this Agreement.

      It is understood and agreed that the representations and warranties set
forth in this Section 2.04 shall survive delivery of the Mortgage Files to the
Trustee. Upon discovery by the Depositor or the Trustee of a breach of any of
the foregoing representations and warranties set forth in this Section 2.04
(referred to herein as a "breach"), which breach materially and adversely
affects the interest of the Certificateholders, the party discovering such
breach shall give prompt written notice to the others and to each Rating Agency
and the NIM Insurer.

      SECTION 2.05. Delivery of Opinion of Counsel in Connection with
                    Substitutions.

      (a) Notwithstanding any contrary provision of this Agreement, no
substitution pursuant to Section 2.02 or Section 2.03 shall be made more than 90
days after the Closing Date unless Countrywide delivers to the Trustee an
Opinion of Counsel, which Opinion of Counsel shall not be at the expense of
either the Trustee or the Trust Fund, addressed to the Trustee, to the effect
that such substitution will not (i) result in the imposition of the tax on
"prohibited transactions" on the Trust Fund or contributions after the Startup
Date, as defined in Sections 860F(a)(2) and 860G(d) of the Code, respectively,
or (ii) cause any REMIC created under this Agreement to fail to qualify as a
REMIC at any time that any Certificates are outstanding.

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<PAGE>

      (b) Upon discovery by the Depositor, a Seller, the Master Servicer, or the
Trustee that any Mortgage Loan does not constitute a "qualified mortgage" within
the meaning of Section 860G(a)(3) of the Code, the party discovering such fact
shall promptly (and in any event within five (5) Business Days of discovery)
give written notice thereof to the other parties and the NIM Insurer. In
connection therewith, the Trustee shall require Countrywide (on its own behalf
and on behalf of Park Granada, Park Monaco and Park Sienna) at its option, to
either (i) substitute, if the conditions in Section 2.03(c) with respect to
substitutions are satisfied, a Substitute Mortgage Loan for the affected
Mortgage Loan, or (ii) repurchase the affected Mortgage Loan within 90 days of
such discovery in the same manner as it would a Mortgage Loan for a breach of
representation or warranty made pursuant to Section 2.03. The Trustee shall
reconvey to Countrywide the Mortgage Loan to be released pursuant to this
Section in the same manner, and on the same terms and conditions, as it would a
Mortgage Loan repurchased for breach of a representation or warranty contained
in Section 2.03.

      SECTION 2.06. Execution and Delivery of Certificates.

      The Trustee acknowledges the transfer and assignment to it of the Trust
Fund and, concurrently with such transfer and assignment, has executed and
delivered to or upon the order of the Depositor, the Certificates in authorized
denominations evidencing directly or indirectly the entire ownership of the
Trust Fund. The Trustee agrees to hold the Trust Fund and exercise the rights
referred to above for the benefit of all present and future Holders of the
Certificates and to perform the duties set forth in this Agreement, to the end
that the interests of the Holders of the Certificates may be adequately and
effectively protected.

      SECTION 2.07. REMIC Matters.

      The Preliminary Statement sets forth the designations and "latest possible
maturity date" for federal income tax purposes of all interests created hereby.
The "Startup Day" for purposes of the REMIC Provisions shall be the Closing
Date. The "tax matters person" with respect to each REMIC hereunder shall be the
Trustee and the Trustee shall hold the Tax Matters Person Certificate. Each
REMIC's fiscal year shall be the calendar year.

      SECTION 2.08. Covenants of the Master Servicer.

      The Master Servicer hereby covenants to the Depositor and the Trustee as
follows:

      (a) the Master Servicer shall comply in the performance of its obligations
under this Agreement with all reasonable rules and requirements of the insurer
under each Required Insurance Policy; and

      (b) no written information, certificate of an officer, statement furnished
in writing or written report delivered to the Depositor, any affiliate of the
Depositor or the Trustee and prepared by the Master Servicer pursuant to this
Agreement will contain any untrue statement of a material fact or omit to state
a material fact necessary to make such information, certificate, statement or
report not misleading.

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                                  ARTICLE III
                           ADMINISTRATION AND SERVICING
                                OF MORTGAGE LOANS

      SECTION 3.01. Master Servicer to Service Mortgage Loans.

      For and on behalf of the Certificateholders, the Master Servicer shall
service and administer the Mortgage Loans in accordance with the terms of this
Agreement and customary and usual standards of practice of prudent mortgage loan
servicers. In connection with such servicing and administration, the Master
Servicer shall have full power and authority, acting alone and/or through
Subservicers as provided in Section 3.02, subject to the terms of this Agreement
(i) to execute and deliver, on behalf of the Certificateholders and the Trustee,
customary consents or waivers and other instruments and documents, (ii) to
consent to transfers of any Mortgaged Property and assumptions of the Mortgage
Notes and related Mortgages (but only in the manner provided in this Agreement),
(iii) to collect any Insurance Proceeds and other Liquidation Proceeds (which
for the purpose of this Section 3.01 includes any Subsequent Recoveries), and
(iv) to effectuate foreclosure or other conversion of the ownership of the
Mortgaged Property securing any Mortgage Loan; provided that the Master Servicer
shall not take any action that is inconsistent with or prejudices the interests
of the Trust Fund or the Certificateholders in any Mortgage Loan or the rights
and interests of the Depositor, the Trustee and the Certificateholders under
this Agreement. The Master Servicer shall represent and protect the interests of
the Trust Fund in the same manner as it protects its own interests in mortgage
loans in its own portfolio in any claim, proceeding or litigation regarding a
Mortgage Loan, and shall not make or permit any modification, waiver or
amendment of any Mortgage Loan which would cause any REMIC created under this
Agreement to fail to qualify as a REMIC or result in the imposition of any tax
under section 860F(a) or section 860G(d) of the Code. Without limiting the
generality of the foregoing, the Master Servicer, in its own name or in the name
of the Depositor and the Trustee, is hereby authorized and empowered by the
Depositor and the Trustee, when the Master Servicer believes it appropriate in
its reasonable judgment, to execute and deliver, on behalf of the Trustee, the
Depositor, the Certificateholders or any of them, any and all instruments of
satisfaction or cancellation, or of partial or full release or discharge and all
other comparable instruments, with respect to the Mortgage Loans, and with
respect to the Mortgaged Properties held for the benefit of the
Certificateholders. The Master Servicer shall prepare and deliver to the
Depositor and/or the Trustee such documents requiring execution and delivery by
either or both of them as are necessary or appropriate to enable the Master
Servicer to service and administer the Mortgage Loans to the extent that the
Master Servicer is not permitted to execute and deliver such documents pursuant
to the preceding sentence. Upon receipt of such documents, the Depositor and/or
the Trustee shall execute such documents and deliver them to the Master
Servicer. The Master Servicer further is authorized and empowered by the
Trustee, on behalf of the Certificateholders and the Trustee, in its own name or
in the name of the Subservicer, when the Master Servicer or the Subservicer, as
the case may be, believes it appropriate in its best judgment to register any
Mortgage Loan on the MERS(R) System, or cause the removal from the registration
of any Mortgage Loan on the MERS(R) System, to execute and deliver, on behalf of
the Trustee and the Certificateholders or any of them, any and all instruments
of assignment and other comparable instruments with respect to such assignment
or re-recording of a Mortgage in the name of MERS, solely as nominee for the
Trustee and its successors and assigns.

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<PAGE>

      In accordance with the standards of the preceding paragraph, the Master
Servicer shall advance or cause to be advanced funds as necessary for the
purpose of effecting the payment of taxes and assessments on the Mortgaged
Properties, which advances shall be reimbursable in the first instance from
related collections from the Mortgagors pursuant to Section 3.06, and further as
provided in Section 3.08. The costs incurred by the Master Servicer, if any, in
effecting the timely payments of taxes and assessments on the Mortgaged
Properties and related insurance premiums shall not, for the purpose of
calculating monthly distributions to the Certificateholders, be added to the
Stated Principal Balances of the related Mortgage Loans, notwithstanding that
the terms of such Mortgage Loans so permit.

      SECTION 3.02. Subservicing; Enforcement of the Obligations of
                    Subservicers.

      (a) The Master Servicer may arrange for the subservicing of any Mortgage
Loan by a Subservicer pursuant to a subservicing agreement; provided, however,
that such subservicing arrangement and the terms of the related subservicing
agreement must provide for the servicing of such Mortgage Loans in a manner
consistent with the servicing arrangements contemplated under this Agreement;
provided, however, that the NIM Insurer shall have consented to such
subservicing agreements (which consent shall not be unreasonably withheld).
Unless the context otherwise requires, references in this Agreement to actions
taken or to be taken by the Master Servicer in servicing the Mortgage Loans
include actions taken or to be taken by a Subservicer on behalf of the Master
Servicer. Notwithstanding the provisions of any subservicing agreement, any of
the provisions of this Agreement relating to agreements or arrangements between
the Master Servicer and a Subservicer or reference to actions taken through a
Subservicer or otherwise, the Master Servicer shall remain obligated and liable
to the Depositor, the Trustee and the Certificateholders for the servicing and
administration of the Mortgage Loans in accordance with the provisions of this
Agreement without diminution of such obligation or liability by virtue of such
subservicing agreements or arrangements or by virtue of indemnification from the
Subservicer and to the same extent and under the same terms and conditions as if
the Master Servicer alone were servicing and administering the Mortgage Loans.
All actions of each Subservicer performed pursuant to the related subservicing
agreement shall be performed as an agent of the Master Servicer with the same
force and effect as if performed directly by the Master Servicer.

      (b) For purposes of this Agreement, the Master Servicer shall be deemed to
have received any collections, recoveries or payments with respect to the
Mortgage Loans that are received by a Subservicer regardless of whether such
payments are remitted by the Subservicer to the Master Servicer.

      SECTION 3.03. Rights of the Depositor, the NIM Insurer and the Trustee in
Respect of the Master Servicer.

      The Depositor may, but is not obligated to, enforce the obligations of the
Master Servicer under this Agreement and may, but is not obligated to, perform,
or cause a designee to perform, any defaulted obligation of the Master Servicer
under this Agreement and in connection with any such defaulted obligation to
exercise the related rights of the Master Servicer under this Agreement;
provided that the Master Servicer shall not be relieved of any of its
obligations under this Agreement by virtue of such performance by the Depositor
or its designee. None of the Trustee, the NIM Insurer or the Depositor shall
have any responsibility or liability for any action

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or failure to act by the Master Servicer nor shall the Trustee or the Depositor
be obligated to supervise the performance of the Master Servicer under this
Agreement or otherwise.

      SECTION 3.04. Trustee to Act as Master Servicer.

      In the event that the Master Servicer shall for any reason no longer be
the Master Servicer under this Agreement (including by reason of an Event of
Default or termination by the Depositor), the Trustee or its successor shall
then assume all of the rights and obligations of the Master Servicer under this
Agreement arising thereafter (except that the Trustee shall not be (i) liable
for losses of the Master Servicer pursuant to Section 3.09 or any acts or
omissions of the predecessor Master Servicer under this Agreement), (ii)
obligated to make Advances if it is prohibited from doing so by applicable law,
(iii) obligated to effectuate repurchases or substitutions of Mortgage Loans
under this Agreement including, but not limited to, repurchases or substitutions
of Mortgage Loans pursuant to Section 2.02 or 2.03, (iv) responsible for
expenses of the Master Servicer pursuant to Section 2.03 or (v) deemed to have
made any representations and warranties of the Master Servicer under this
Agreement). Any such assumption shall be subject to Section 7.02. If the Master
Servicer shall for any reason no longer be the Master Servicer (including by
reason of any Event of Default or termination by the Depositor), the Trustee or
its successor shall succeed to any rights and obligations of the Master Servicer
under each subservicing agreement.

      The Master Servicer shall, upon request of the Trustee, but at the expense
of the Master Servicer, deliver to the assuming party all documents and records
relating to each subservicing agreement or substitute subservicing agreement and
the Mortgage Loans then being serviced thereunder and an accounting of amounts
collected or held by it and otherwise use its best efforts to effect the orderly
and efficient transfer of the substitute subservicing agreement to the assuming
party.

      SECTION 3.05. Collection of Mortgage Loan Payments; Certificate Account;
                     Distribution Account; Carryover Reserve Fund; Principal
                    Reserve Fund; the Pre-funding Account; the Capitalized
                    Interest Account.

      (a) The Master Servicer shall make reasonable efforts in accordance with
the customary and usual standards of practice of prudent mortgage servicers to
collect all payments called for under the terms and provisions of the Mortgage
Loans to the extent such procedures shall be consistent with this Agreement and
the terms and provisions of any related Required Insurance Policy. Consistent
with the foregoing, the Master Servicer may in its discretion (i) waive any late
payment charge or, subject to Section 3.20, any Prepayment Charge or penalty
interest in connection with the prepayment of a Mortgage Loan and (ii) extend
the due dates for payments due on a Mortgage Note for a period not greater than
180 days; provided, however, that the Master Servicer cannot extend the maturity
of any such Mortgage Loan past the date on which the final payment is due on the
latest maturing Mortgage Loan as of the Cut-off Date. In the event of any such
arrangement, the Master Servicer shall make Advances on the related Mortgage
Loan in accordance with the provisions of Section 4.01 during the scheduled
period in accordance with the amortization schedule of such Mortgage Loan
without modification thereof by reason of such arrangements. In addition, the
NIM Insurer's prior written consent shall be required for any waiver of
Prepayment Charges or for the extension of the due dates for payments due on a
Mortgage Note, if the aggregate number of outstanding Mortgage Loans that

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have been granted such waivers or extensions exceeds 5% of the aggregate number
of Mortgage Loans. The Master Servicer shall not be required to institute or
join in litigation with respect to collection of any payment (whether under a
Mortgage, Mortgage Note or otherwise or against any public or governmental
authority with respect to a taking or condemnation) if it reasonably believes
that enforcing the provision of the Mortgage or other instrument pursuant to
which such payment is required is prohibited by applicable law.

      (b) The Master Servicer shall establish and maintain a Certificate Account
into which the Master Servicer shall deposit or cause to be deposited no later
than two Business Days after receipt (or, if the current long-term credit rating
of Countrywide is reduced below "A-" by S&P or "A3" by Moody's, the Master
Servicer shall deposit or cause to be deposited on a daily basis within one
Business Day of receipt), except as otherwise specifically provided in this
Agreement, the following payments and collections remitted by Subservicers or
received by it in respect of Mortgage Loans subsequent to the Cut-off Date
(other than in respect of principal and interest due on the Mortgage Loans on or
before the Cut-off Date) and the following amounts required to be deposited
under this Agreement:

            (i) all payments on account of principal on the Mortgage Loans,
      including Principal Prepayments;

            (ii) all payments on account of interest on the Mortgage Loans, net
      of the related Master Servicing Fee, Prepayment Interest Excess and any
       lender paid mortgage insurance premiums;

            (iii) all Insurance Proceeds, Subsequent Recoveries and Liquidation
      Proceeds, other than proceeds to be applied to the restoration or repair
      of a Mortgaged Property or released to the Mortgagor in accordance with
      the Master Servicer's normal servicing procedures;

            (iv) any amount required to be deposited by the Master Servicer or
      the Depositor in connection with any losses on Permitted Investments for
      which it is responsible;

            (v) any amounts required to be deposited by the Master Servicer
      pursuant to Section 3.09(c) and in respect of net monthly rental income
      from REO Property pursuant to Section 3.11;

            (vi) all Substitution Adjustment Amounts;

            (vii) all Advances made by the Master Servicer pursuant to Section
      4.01;

            (viii) all Prepayment Charges collected; and

            (ix) any other amounts required to be deposited under this
      Agreement.

      In addition, with respect to any Mortgage Loan that is subject to a
buydown agreement, on each Due Date for such Mortgage Loan, in addition to the
monthly payment remitted by the Mortgagor, the Master Servicer shall cause funds
to be deposited into the Certificate Account in an amount required to cause an
amount of interest to be paid with respect to such Mortgage Loan

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equal to the amount of interest that has accrued on such Mortgage Loan from the
preceding Due Date at the Mortgage Rate net of the related Master Servicing Fee.

      The foregoing requirements for remittance by the Master Servicer shall be
exclusive, it being understood and agreed that, without limiting the generality
of the foregoing, payments in the nature of late payment charges or assumption
fees, if collected, need not be remitted by the Master Servicer. In the event
that the Master Servicer shall remit any amount not required to be remitted, it
may at any time withdraw or direct the institution maintaining the Certificate
Account to withdraw such amount from the Certificate Account, any provision in
this Agreement to the contrary notwithstanding. Such withdrawal or direction may
be accomplished by delivering written notice thereof to the Trustee or such
other institution maintaining the Certificate Account which describes the
amounts deposited in error in the Certificate Account. The Master Servicer shall
maintain adequate records with respect to all withdrawals made pursuant to this
Section. All funds deposited in the Certificate Account shall be held in trust
for the Certificateholders until withdrawn in accordance with Section 3.08.

      (c) The Trustee shall establish and maintain, on behalf of the
Certificateholders, a Principal Reserve Fund in the name of the Trustee. On the
Closing Date, the Depositor shall deposit into the Principal Reserve Fund $100.
Funds on deposit in the Principal Reserve Fund shall not be invested. The
Principal Reserve Fund shall be treated as an "outside reserve fund" under
applicable Treasury regulations and shall not be part of any REMIC created under
this Agreement. Amounts on deposit in the Principal Reserve Fund shall not be
invested.

      (d) The Trustee shall establish and maintain, on behalf of the
Certificateholders, the Distribution Account. The Trustee shall, promptly upon
receipt, deposit in the Distribution Account and retain in the Distribution
Account the following:

      (i) the aggregate amount remitted by the Master Servicer to the Trustee
pursuant to Section 3.08(a)(ix);

      (ii) any amount deposited by the Master Servicer or the Depositor pursuant
to Section 3.05(e) in connection with any losses on Permitted Investments for
which it is responsible; and

      (iii) any other amounts deposited hereunder which are required to be
deposited in the Distribution Account.

      In the event that the Master Servicer shall remit any amount not required
to be remitted, it may at any time direct the Trustee to withdraw such amount
from the Distribution Account, any provision in this Agreement to the contrary
notwithstanding. Such direction may be accomplished by delivering an Officer's
Certificate to the Trustee which describes the amounts deposited in error in the
Distribution Account. All funds deposited in the Distribution Account shall be
held by the Trustee in trust for the Certificateholders until disbursed in
accordance with this Agreement or withdrawn in accordance with Section 3.08. In
no event shall the Trustee incur liability for withdrawals from the Distribution
Account at the direction of the Master Servicer.

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      (e) Each institution at which the Certificate Account, the Distribution
Account, the Pre-funding Account or the Capitalized Interest Account is
maintained shall invest the funds therein as directed in writing by the Master
Servicer in Permitted Investments, which shall mature not later than (i) in the
case of the Certificate Account, the Pre-funding Account and the Capitalized
Interest Account, the second Business Day next preceding the related
Distribution Account Deposit Date (except that if such Permitted Investment is
an obligation of the institution that maintains such account, then such
Permitted Investment shall mature not later than the Business Day next preceding
such Distribution Account Deposit Date) and (ii) in the case of the Distribution
Account, the Business Day next preceding the Distribution Date (except that if
such Permitted Investment is an obligation of the institution that maintains
such fund or account, then such Permitted Investment shall mature not later than
such Distribution Date) and, in each case, shall not be sold or disposed of
prior to its maturity. All such Permitted Investments shall be made in the name
of the Trustee, for the benefit of the Certificateholders. All income and gain
net of any losses realized from any such investment of funds on deposit in the
Certificate Account, or the Distribution Account shall be for the benefit of the
Master Servicer as servicing compensation and shall be remitted to it monthly as
provided in this Agreement. The amount of any realized losses in the Certificate
Account or the Distribution Account incurred in any such account in respect of
any such investments shall promptly be deposited by the Master Servicer in the
Certificate Account or paid to the Trustee for deposit into the Distribution
Account, as applicable. The amount of any losses in the Pre-funding Account or
the Capitalized Interest Account incurred in respect of any such investments
shall promptly be deposited by the Depositor in the Pre-funding Account or the
Capitalized Interest Account, as applicable. All income or gain (net of any
losses) realized from any such investment of funds on deposit in the Capitalized
Interest Account shall be credited to the Capitalized Interest Account. The
Trustee in its fiduciary capacity shall not be liable for the amount of any loss
incurred in respect of any investment or lack of investment of funds held in the
Certificate Account, the Distribution Account, the Pre-funding Account or the
Capitalized Interest Account and made in accordance with this Section 3.05.

      (f) The Master Servicer shall give notice to the Trustee, each Seller,
each Rating Agency and the Depositor of any proposed change of the location of
the Certificate Account prior to any change thereof. The Trustee shall give
notice to the Master Servicer, each Seller, each Rating Agency and the Depositor
of any proposed change of the location of the Distribution Account, the
Pre-funding Account, the Capitalized Interest Account or the Carryover Reserve
Fund prior to any change thereof.

      (g) On the Closing Date, the Trustee shall establish and maintain in its
name, in trust for the benefit of the Holders of the Offered Certificates, the
Carryover Reserve Fund and shall deposit $1,000 therein upon receipt from or on
behalf of the Depositor of such amount. The Carryover Reserve Fund shall be an
Eligible Account, and funds on deposit therein shall be held separate and apart
from, and shall not be commingled with, any other moneys, including without
limitation, other moneys held by the Trustee pursuant to this Agreement.

      Funds in the Carryover Reserve Fund may be invested in Permitted
Investments at the direction of the Majority of the Holders of the Class C
Certificates, which Permitted Investments shall mature not later than the
Business Day immediately preceding the first Distribution Date that follows the
date of such investment (except that if such Permitted

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Investment is an obligation of the institution that maintains the Carryover
Reserve Fund, then such Permitted Investment shall mature not later than such
Distribution Date) and shall not be sold or disposed of prior to maturity. All
such Permitted Investments shall be made in the name of the Trustee, for the
benefit of the Holders of the Class C Certificates. In the absence of such
written direction, all funds in the Carryover Reserve Fund shall be invested by
the Trustee in The Bank of New York cash reserves. Any net investment earnings
on such amounts shall be retained therein until withdrawn as provided in Section
3.08. Any losses incurred in the Carryover Reserve Fund in respect of any such
investments shall be charged against amounts on deposit in the Carryover Reserve
Fund (or such investments) immediately as realized. The Trustee shall not be
liable for the amount of any loss incurred in respect of any investment or lack
of investment of funds held in the Carryover Reserve Fund and made in accordance
with this Section 3.05. The Carryover Reserve Fund will not constitute an asset
of any REMIC created hereunder. The Class C Certificates shall evidence
ownership of the Carryover Reserve Fund for federal tax purposes.

            (h) The Trustee shall establish and maintain, on behalf of the
Certificateholders, the Pre-funding Account. On the Closing Date Countrywide
shall remit the Pre-funded Amount to the Trustee for deposit in the Pre-funding
Account. On each Supplemental Transfer Date, upon satisfaction of the conditions
for such Supplemental Transfer Date set forth in Section 2.01(e), with respect
to the related Supplemental Transfer Agreement, the Trustee shall pay to each
Seller selling Supplemental Mortgage Loans to the Depositor on such Supplemental
Transfer Date the portion of the Aggregate Supplemental Transfer Amount held in
escrow pursuant to Section 2.01(e) as payment of the purchase price for the
Supplemental Mortgage Loans sold by such Seller. If at any time the Depositor
becomes aware that the aggregate Cut-off Date Stated Principal Balance of
Supplemental Mortgage Loans reflected on any Supplemental Transfer Agreement
exceeds the actual aggregate Cut-off Date Stated Principal Balance of the
relevant Supplemental Mortgage Loans, the Depositor may so notify the Trustee
and the Trustee shall redeposit into the Pre-funding Account the excess reported
to it by the Depositor.

      If any funds remain in the Pre-funding Account at the end of the Funding
Period, to the extent that they represent earnings on the amounts originally
deposited into the Pre-funding Account, the Trustee shall distribute them to the
order of the Depositor. The remaining funds shall be transferred to the
Distribution Account to be included as part of the Principal Remittance Amount
for each Loan Group.

            (i) The Trustee shall establish and maintain, on behalf of the
Certificateholders, the Capitalized Interest Account. On the Closing Date,
Countrywide shall remit the aggregate Capitalized Interest Requirement to the
Trustee for deposit in the Capitalized Interest Account. On each Distribution
Account Deposit Date related to a Funding Period Distribution Date, upon
satisfaction of the conditions for such Supplemental Transfer Date set forth in
Section 2.01(e), with respect to the related Supplemental Transfer Agreement,
the Trustee shall transfer from the Capitalized Interest Account to the
Distribution Account an amount equal to the Capitalized Interest Requirement
(which, to the extent required, may include investment earnings on amounts on
deposit therein) with respect to the amount remaining in the Pre-funding Account
for the related Distribution Date as identified by Countrywide in the
Supplemental Transfer Agreement.

      If any funds remain in the Capitalized Interest Account at the end of the
Funding Period, the Trustee shall make the transfer described in the preceding
paragraph if necessary for the

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remaining Funding Period Distribution Date and the Trustee shall distribute any
remaining funds in the Capitalized Interest Account to the order of the
Depositor.

      SECTION 3.06. Collection of Taxes, Assessments and Similar Items; Escrow
                    Accounts.

      (a) To the extent required by the related Mortgage Note and not violative
of current law, the Master Servicer shall establish and maintain one or more
accounts (each, an "Escrow Account") and deposit and retain therein all
collections from the Mortgagors (or advances by the Master Servicer) for the
payment of taxes, assessments, hazard insurance premiums or comparable items for
the account of the Mortgagors. Nothing in this Agreement shall require the
Master Servicer to compel a Mortgagor to establish an Escrow Account in
violation of applicable law.

      (b) Withdrawals of amounts so collected from the Escrow Accounts may be
made only to effect timely payment of taxes, assessments, hazard insurance
premiums, condominium or PUD association dues, or comparable items, to reimburse
the Master Servicer out of related collections for any payments made pursuant to
Sections 3.01 (with respect to taxes and assessments and insurance premiums) and
3.09 (with respect to hazard insurance), to refund to any Mortgagors any sums
determined to be overages, to pay interest, if required by law or the terms of
the related Mortgage or Mortgage Note, to Mortgagors on balances in the Escrow
Account or to clear and terminate the Escrow Account at the termination of this
Agreement in accordance with Section 9.01. The Escrow Accounts shall not be a
part of the Trust Fund.

      (c) The Master Servicer shall advance any payments referred to in Section
3.06(a) that are not timely paid by the Mortgagors on the date when the tax,
premium or other cost for which such payment is intended is due, but the Master
Servicer shall be required so to advance only to the extent that such advances,
in the good faith judgment of the Master Servicer, will be recoverable by the
Master Servicer out of Insurance Proceeds, Liquidation Proceeds or otherwise.

      SECTION 3.07. Access to Certain Documentation and Information Regarding
the Mortgage Loans.

      The Master Servicer shall afford each Seller, the Depositor, the NIM
Insurer and the Trustee reasonable access to all records and documentation
regarding the Mortgage Loans and all accounts, insurance information and other
matters relating to this Agreement, such access being afforded without charge,
but only upon reasonable request and during normal business hours at the office
designated by the Master Servicer.

      Upon reasonable advance notice in writing, the Master Servicer will
provide to each Certificateholder and/or Certificate Owner which is a savings
and loan association, bank or insurance company certain reports and reasonable
access to information and documentation regarding the Mortgage Loans sufficient
to permit such Certificateholder and/or Certificate Owner to comply with
applicable regulations of the OTS or other regulatory authorities with respect
to investment in the Certificates; provided that the Master Servicer shall be
entitled to be reimbursed by each such Certificateholder and/or Certificate
Owner for actual expenses incurred by the Master Servicer in providing such
reports and access. Upon request, the Master Servicer

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shall furnish to the Trustee and the NIM Insurer its most recent publicly
available financial statements and any other information relating to its
capacity to perform its obligations under this Agreement reasonably requested by
the NIM Insurer.

      SECTION 3.08. Permitted Withdrawals from the Certificate Account, the
                    Distribution Account, the Carryover Reserve Fund and the
                    Principal Reserve Fund.

      (a) The Master Servicer may from time to time make withdrawals from the
Certificate Account for the following purposes:

            (i) to pay to the Master Servicer (to the extent not previously
      retained by the Master Servicer) the servicing compensation to which it is
      entitled pursuant to Section 3.14 and to pay to the Master Servicer, as
      additional servicing compensation, earnings on or investment income with
       respect to funds in or credited to the Certificate Account;

            (ii) to reimburse each of the Master Servicer and the Trustee for
      unreimbursed Advances made by it, such right of reimbursement pursuant to
      this subclause (ii) being limited to amounts received on the Mortgage
      Loan(s) in respect of which any such Advance was made;

            (iii) to reimburse each of the Master Servicer and the Trustee for
      any Nonrecoverable Advance previously made by it;

            (iv) to reimburse the Master Servicer for Insured Expenses from the
      related Insurance Proceeds;

            (v) to reimburse the Master Servicer for (a) unreimbursed Servicing
      Advances, the Master Servicer's right to reimbursement pursuant to this
      clause (a) with respect to any Mortgage Loan being limited to amounts
      received on such Mortgage Loan(s) that represent late recoveries of the
      payments for which such advances were made pursuant to Section 3.01 or
      Section 3.06 and (b) for unpaid Master Servicing Fees as provided in
      Section 3.11;

            (vi) to pay to the purchaser, with respect to each Mortgage Loan or
      property acquired in respect thereof that has been purchased pursuant to
      Section 2.02, 2.03 or 3.11, all amounts received on such Mortgage Loan
      after the date of such purchase;

            (vii) to reimburse the Sellers, the Master Servicer, the NIM Insurer
      or the Depositor for expenses incurred by any of them and reimbursable
      pursuant to Section 6.03;

            (viii) to withdraw any amount deposited in the Certificate Account
      and not required to be deposited in the Certificate Account;

            (ix) on or prior to the Distribution Account Deposit Date, to
      withdraw an amount equal to the Interest Remittance Amount, Principal
      Remittance Amount,

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      Prepayment Charge Amount and Trustee Fee for such Distribution Date and
      remit such amount to the Trustee for deposit in the Distribution Account;
      and

            (x) to clear and terminate the Certificate Account upon termination
      of this Agreement pursuant to Section 9.01.

      The Master Servicer shall keep and maintain separate accounting, on a
Mortgage Loan by Mortgage Loan basis, for the purpose of justifying any
withdrawal from the Certificate Account pursuant to such subclauses (i), (ii),
(iv), (v) and (vi). Prior to making any withdrawal from the Certificate Account
pursuant to subclause (iii), the Master Servicer shall deliver to the Trustee an
Officer's Certificate of a Servicing Officer indicating the amount of any
previous Advance determined by the Master Servicer to be a Nonrecoverable
Advance and identifying the related Mortgage Loans(s), and their respective
portions of such Nonrecoverable Advance.

      (b) The Trustee shall withdraw funds from the Distribution Account for
distributions to Certificateholders and remittance to the Swap Account, in the
manner specified in this Agreement (and to withhold from the amounts so
withdrawn, the amount of any taxes that it is authorized to withhold pursuant to
the third paragraph of Section 8.11). In addition, the Trustee may from time to
time make withdrawals from the Distribution Account for the following purposes:

            (i) to pay to itself the Trustee Fee for the related Distribution
      Date;

            (ii) to pay to the Master Servicer as additional servicing
      compensation earnings on or investment income with respect to funds in the
      Distribution Account;

            (iii) to withdraw and return to the Master Servicer any amount
      deposited in the Distribution Account and not required to be deposited
      therein;

            (iv) to reimburse the Trustee for any unreimbursed Advances made by
      it pursuant to Section 4.01(b) hereof, such right of reimbursement
      pursuant to this subclause (iv) being limited to (x) amounts received on
      the related Mortgage Loan(s) in respect of which any such Advance was made
      and (y) amounts not otherwise reimbursed to the Trustee pursuant to
      Section 3.08(a)(ii) hereof;

            (v) to reimburse the Trustee for any Nonrecoverable Advance
      previously made by the Trustee pursuant to Section 4.01(b) hereof, such
      right of reimbursement pursuant to this subclause (v) being limited to
      amounts not otherwise reimbursed to the Trustee pursuant to Section
      3.08(a)(iii) hereof; and

            (vi) to clear and terminate the Distribution Account upon
      termination of the Agreement pursuant to Section 9.01.

      (c) The Trustee shall withdraw funds from the Carryover Reserve Fund for
distribution to the LIBOR Certificates and the Class C Certificates in the
manner specified in Section 4.02(e) (and to withhold from the amounts so
withdrawn the amount of any taxes that it is authorized to retain pursuant to
the third paragraph of Section 8.11). In addition, the Trustee

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may from time to time make withdrawals from the Carryover Reserve Fund for the
following purposes:

            (i) to withdraw any amount deposited in the Carryover Reserve Fund
      and not required to be deposited therein; and

            (ii) to clear and terminate the Carryover Reserve Fund upon the
      termination of this Agreement pursuant to Section 9.01.

      (d) On the Business Day before the Class P Principal Distribution Date,
the Trustee shall transfer $100.00 from the Principal Reserve Fund to the
Distribution Account and shall distribute such amount to the Class P
Certificates on the Class P Principal Distribution Date. Following the
distributions to be made in accordance with the preceding sentence, the Trustee
shall then terminate the Principal Reserve Fund.

      SECTION 3.09. Maintenance of Hazard Insurance; Maintenance of Primary
                    Insurance Policies.

      (a) The Master Servicer shall cause to be maintained, for each Mortgage
Loan, hazard insurance with extended coverage in an amount that is at least
equal to the lesser of (i) the maximum insurable value of the improvements
securing such Mortgage Loan or (ii) the greater of (y) the outstanding principal
balance of the Mortgage Loan and (z) an amount such that the proceeds of such
policy shall be sufficient to prevent the Mortgagor and/or the mortgagee from
becoming a co-insurer. Each such policy of standard hazard insurance shall
contain, or have an accompanying endorsement that contains, a standard mortgagee
clause. Any amounts collected by the Master Servicer under any such policies
(other than the amounts to be applied to the restoration or repair of the
related Mortgaged Property or amounts released to the Mortgagor in accordance
with the Master Servicer's normal servicing procedures) shall be deposited in
the Certificate Account. Any cost incurred by the Master Servicer in maintaining
any such insurance shall not, for the purpose of calculating monthly
distributions to the Certificateholders or remittances to the Trustee for their
benefit, be added to the principal balance of the Mortgage Loan, notwithstanding
that the terms of the Mortgage Loan so permit. Such costs shall be recoverable
by the Master Servicer out of late payments by the related Mortgagor or out of
proceeds of liquidation of the Mortgage Loan or Subsequent Recoveries to the
extent permitted by Section 3.08. It is understood and agreed that no earthquake
or other additional insurance is to be required of any Mortgagor or maintained
on property acquired in respect of a Mortgage other than pursuant to such
applicable laws and regulations as shall at any time be in force and as shall
require such additional insurance. If the Mortgaged Property is located at the
time of origination of the Mortgage Loan in a federally designated special flood
hazard area and such area is participating in the national flood insurance
program, the Master Servicer shall cause flood insurance to be maintained with
respect to such Mortgage Loan. Such flood insurance shall be in an amount equal
to the least of (i) the outstanding principal balance of the related Mortgage
Loan, (ii) the replacement value of the improvements which are part of such
Mortgaged Property, and (iii) the maximum amount of such insurance available for
the related Mortgaged Property under the national flood insurance program.

      (b) [Reserved].

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      (c) The Master Servicer shall not take any action which would result in
non-coverage under any applicable Primary Insurance Policy of any loss which,
but for the actions of the Master Servicer, would have been covered thereunder.
The Master Servicer shall not cancel or refuse to renew any such Primary
Insurance Policy that is in effect at the date of the initial issuance of the
Certificates and is required to be kept in force hereunder unless the
replacement Primary Insurance Policy for such canceled or non-renewed policy is
maintained with a Qualified Insurer.

      Except with respect to any Lender PMI Mortgage Loans, the Master Servicer
shall not be required to maintain any Primary Insurance Policy (i) with respect
to any Mortgage Loan with a Loan-to-Value Ratio less than or equal to 80% as of
any date of determination or, based on a new appraisal, the principal balance of
such Mortgage Loan represents 80% or less of the new appraised value or (ii) if
maintaining such Primary Insurance Policy is prohibited by applicable law. With
respect to the Lender PMI Mortgage Loans, the Master Servicer shall maintain the
Primary Insurance Policy for the life of such Mortgage Loans, unless otherwise
provided for in the related Mortgage Note or prohibited by law.

      The Master Servicer agrees to effect the timely payment of the premiums on
each Primary Insurance Policy, and such costs not otherwise recoverable shall be
recoverable by the Master Servicer from the related proceeds of liquidation and
Subsequent Recoveries.

      (d) In connection with its activities as Master Servicer of the Mortgage
Loans, the Master Servicer agrees to present on behalf of itself, the Trustee
and Certificateholders, claims to the insurer under any Primary Insurance
Policies and, in this regard, to take such reasonable action as shall be
necessary to permit recovery under any Primary Insurance Policies respecting
defaulted Mortgage Loans. Any amounts collected by the Master Servicer under any
Primary Insurance Policies shall be deposited in the Certificate Account.

      SECTION 3.10. Enforcement of Due-on-Sale Clauses; Assumption Agreements.

      (a) Except as otherwise provided in this Section, when any property
subject to a Mortgage has been conveyed by the Mortgagor, the Master Servicer
shall to the extent that it has knowledge of such conveyance, enforce any
due-on-sale clause contained in any Mortgage Note or Mortgage, to the extent
permitted under applicable law and governmental regulations, but only to the
extent that such enforcement will not adversely affect or jeopardize coverage
under any Required Insurance Policy. Notwithstanding the foregoing, the Master
Servicer is not required to exercise such rights with respect to a Mortgage Loan
if the Person to whom the related Mortgaged Property has been conveyed or is
proposed to be conveyed satisfies the terms and conditions contained in the
Mortgage Note and Mortgage related thereto and the consent of the mortgagee
under such Mortgage Note or Mortgage is not otherwise so required under such
Mortgage Note or Mortgage as a condition to such transfer. In the event that the
Master Servicer is prohibited by law from enforcing any such due-on-sale clause,
or if coverage under any Required Insurance Policy would be adversely affected,
or if nonenforcement is otherwise permitted hereunder, the Master Servicer is
authorized, subject to Section 3.10(b), to take or enter into an assumption and
modification agreement from or with the person to whom such property has been or
is about to be conveyed, pursuant to which such person becomes liable under the
Mortgage Note and, unless prohibited by applicable state law, the Mortgagor
remains liable thereon, provided that the Mortgage Loan shall continue to be
covered (if so covered

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before the Master Servicer enters such agreement) by the applicable Required
Insurance Policies. The Master Servicer, subject to Section 3.10(b), is also
authorized with the prior approval of the insurers under any Required Insurance
Policies to enter into a substitution of liability agreement with such Person,
pursuant to which the original Mortgagor is released from liability and such
Person is substituted as Mortgagor and becomes liable under the Mortgage Note.
Notwithstanding the foregoing, the Master Servicer shall not be deemed to be in
default under this Section by reason of any transfer or assumption which the
Master Servicer reasonably believes it is restricted by law from preventing, for
any reason whatsoever.

      (b) Subject to the Master Servicer's duty to enforce any due-on-sale
clause to the extent set forth in Section 3.10(a), in any case in which a
Mortgaged Property has been conveyed to a Person by a Mortgagor, and such Person
is to enter into an assumption agreement or modification agreement or supplement
to the Mortgage Note or Mortgage that requires the signature of the Trustee, or
if an instrument of release signed by the Trustee is required releasing the
Mortgagor from liability on the Mortgage Loan, the Master Servicer shall prepare
and deliver or cause to be prepared and delivered to the Trustee for signature
and shall direct, in writing, the Trustee to execute the assumption agreement
with the Person to whom the Mortgaged Property is to be conveyed and such
modification agreement or supplement to the Mortgage Note or Mortgage or other
instruments as are reasonable or necessary to carry out the terms of the
Mortgage Note or Mortgage or otherwise to comply with any applicable laws
regarding assumptions or the transfer of the Mortgaged Property to such Person.
In connection with any such assumption, no material term of the Mortgage Note
may be changed. In addition, the substitute Mortgagor and the Mortgaged Property
must be acceptable to the Master Servicer in accordance with its underwriting
standards as then in effect. Together with each such substitution, assumption or
other agreement or instrument delivered to the Trustee for execution by it, the
Master Servicer shall deliver an Officer's Certificate signed by a Servicing
Officer stating that the requirements of this subsection have been met in
connection therewith. The Master Servicer shall notify the Trustee that any such
substitution or assumption agreement has been completed by forwarding to the
Trustee the original of such substitution or assumption agreement, which in the
case of the original shall be added to the related Mortgage File and shall, for
all purposes, be considered a part of such Mortgage File to the same extent as
all other documents and instruments constituting a part thereof. Any fee
collected by the Master Servicer for entering into an assumption or substitution
of liability agreement will be retained by the Master Servicer as additional
servicing compensation.

      SECTION 3.11. Realization Upon Defaulted Mortgage Loans; Repurchase of
                    Certain Mortgage Loans.

      (a) The Master Servicer shall use reasonable efforts to foreclose upon or
otherwise comparably convert the ownership of properties securing such of the
Mortgage Loans as come into and continue in default and as to which no
satisfactory arrangements can be made for collection of delinquent payments. In
connection with such foreclosure or other conversion, the Master Servicer shall
follow such practices and procedures as it shall deem necessary or advisable and
as shall be normal and usual in its general mortgage servicing activities and
meet the requirements of the insurer under any Required Insurance Policy;
provided, however, that the Master Servicer shall not be required to expend its
own funds in connection with any foreclosure or towards the restoration of any
property unless it shall determine (i) that such restoration and/or foreclosure
will increase the proceeds of liquidation of the Mortgage Loan after
reimbursement

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to itself of such expenses and (ii) that such expenses will be recoverable to it
through the proceeds of liquidation of the Mortgage Loan and Subsequent
Recoveries (respecting which it shall have priority for purposes of withdrawals
from the Certificate Account). The Master Servicer shall be responsible for all
other costs and expenses incurred by it in any such proceedings; provided,
however, that it shall be entitled to reimbursement thereof from the proceeds of
liquidation of the Mortgage Loan and Subsequent Recoveries with respect to the
related Mortgaged Property, as provided in the definition of Liquidation
Proceeds. If the Master Servicer has knowledge that a Mortgaged Property which
the Master Servicer is contemplating acquiring in foreclosure or by deed in lieu
of foreclosure is located within a 1 mile radius of any site listed in the
Expenditure Plan for the Hazardous Substance Clean Up Bond Act of 1984 or other
site with environmental or hazardous waste risks known to the Master Servicer,
the Master Servicer will, prior to acquiring the Mortgaged Property, consider
such risks and only take action in accordance with its established environmental
review procedures.

      With respect to any REO Property, the deed or certificate of sale shall be
taken in the name of the Trustee for the benefit of the Certificateholders, or
its nominee, on behalf of the Certificateholders. The Trustee's name shall be
placed on the title to such REO Property solely as the Trustee hereunder and not
in its individual capacity. The Master Servicer shall ensure that the title to
such REO Property references the Pooling and Servicing Agreement and the
Trustee's capacity thereunder. Pursuant to its efforts to sell such REO
Property, the Master Servicer shall either itself or through an agent selected
by the Master Servicer protect and conserve such REO Property in the same manner
and to such extent as is customary in the locality where such REO Property is
located and may, incident to its conservation and protection of the interests of
the Certificateholders, rent the same, or any part thereof, as the Master
Servicer deems to be in the best interest of the Certificateholders for the
period prior to the sale of such REO Property. The Master Servicer shall prepare
for and deliver to the Trustee a statement with respect to each REO Property
that has been rented showing the aggregate rental income received and all
expenses incurred in connection with the maintenance of such REO Property at
such times as is necessary to enable the Trustee to comply with the reporting
requirements of the REMIC Provisions. The net monthly rental income, if any,
from such REO Property shall be deposited in the Certificate Account no later
than the close of business on each Determination Date. The Master Servicer shall
perform the tax reporting and withholding required by Sections 1445 and 6050J of
the Code with respect to foreclosures and abandonments, the tax reporting
required by Section 6050H of the Code with respect to the receipt of mortgage
interest from individuals and any tax reporting required by Section 6050P of the
Code with respect to the cancellation of indebtedness by certain financial
entities, by preparing such tax and information returns as may be required, in
the form required, and delivering the same to the Trustee for filing.

      In the event that the Trust Fund acquires any Mortgaged Property as
aforesaid or otherwise in connection with a default or imminent default on a
Mortgage Loan, the Master Servicer shall dispose of such Mortgaged Property as
soon as practicable in a manner that maximizes the Liquidation Proceeds thereof,
but in no event later than three years after its acquisition by the Trust Fund.
In that event, the Trustee shall have been supplied with an Opinion of Counsel
to the effect that the holding by the Trust Fund of such Mortgaged Property
subsequent to a three-year period, if applicable, will not result in the
imposition of taxes on "prohibited transactions" of any REMIC hereunder as
defined in Section 860F of the Code or cause any REMIC hereunder to fail to
qualify as a REMIC at any time that any Certificates are

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outstanding, and that the Trust Fund may continue to hold such Mortgaged
Property (subject to any conditions contained in such Opinion of Counsel) after
the expiration of such three-year period. Notwithstanding any other provision of
this Agreement, no Mortgaged Property acquired by the Trust Fund shall be rented
(or allowed to continue to be rented) or otherwise used for the production of
income by or on behalf of the Trust Fund in such a manner or pursuant to any
terms that would (i) cause such Mortgaged Property to fail to qualify as
"foreclosure property" within the meaning of Section 860G(a)(8) of the Code or
(ii) subject any REMIC hereunder to the imposition of any federal, state or
local income taxes on the income earned from such Mortgaged Property under
Section 860G(c) of the Code or otherwise, unless the Master Servicer has agreed
to indemnify and hold harmless the Trust Fund with respect to the imposition of
any such taxes.

      In the event of a default on a Mortgage Loan one or more of whose obligor
is not a United States Person, as that term is defined in Section 7701(a)(30) of
the Code, in connection with any foreclosure or acquisition of a deed in lieu of
foreclosure (together, "foreclosure") in respect of such Mortgage Loan, the
Master Servicer will cause compliance with the provisions of Treasury Regulation
Section 1.1445-2(d)(3) (or any successor thereto) necessary to assure that no
withholding tax obligation arises with respect to the proceeds of such
foreclosure except to the extent, if any, that proceeds of such foreclosure are
required to be remitted to the obligors on such Mortgage Loan.

      The decision of the Master Servicer to foreclose on a defaulted Mortgage
Loan shall be subject to a determination by the Master Servicer that the
proceeds of such foreclosure would exceed the costs and expenses of bringing
such a proceeding. The income earned from the management of any REO Properties,
net of reimbursement to the Master Servicer for expenses incurred (including any
property or other taxes) in connection with such management and net of
unreimbursed Master Servicing Fees, Advances and Servicing Advances, shall be
applied to the payment of principal of and interest on the related defaulted
Mortgage Loans (with interest accruing as though such Mortgage Loans were still
current) and all such income shall be deemed, for all purposes in this
Agreement, to be payments on account of principal and interest on the related
Mortgage Notes and shall be deposited into the Certificate Account. To the
extent the net income received during any calendar month is in excess of the
amount attributable to amortizing principal and accrued interest at the related
Mortgage Rate on the related Mortgage Loan for such calendar month, such excess
shall be considered to be a partial prepayment of principal of the related
Mortgage Loan.

      The proceeds from any liquidation of a Mortgage Loan, as well as any
income from an REO Property, will be applied in the following order of priority:
first, to reimburse the Master Servicer for any related unreimbursed Servicing
Advances and Master Servicing Fees; second, to reimburse the Master Servicer or
the Trustee for any unreimbursed Advances; third, to reimburse the Certificate
Account for any Nonrecoverable Advances (or portions thereof) that were
previously withdrawn by the Master Servicer or the Trustee pursuant to Section
3.08(a)(iii) that related to such Mortgage Loan; fourth, to accrued and unpaid
interest (to the extent no Advance has been made for such amount or any such
Advance has been reimbursed) on the Mortgage Loan or related REO Property, at
the Adjusted Net Mortgage Rate to the Due Date occurring in the month in which
such amounts are required to be distributed; and fifth, as a recovery of
principal of the Mortgage Loan. Excess Proceeds, if any, from the liquidation of
a Liquidated

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Mortgage Loan will be retained by the Master Servicer as additional servicing
compensation pursuant to Section 3.14.

      The Master Servicer, in its sole discretion, shall have the right to
purchase for its own account from the Trust Fund any Mortgage Loan which is 151
days or more delinquent at a price equal to the Purchase Price; provided,
however, that the Master Servicer may only exercise this right on or before the
next to the last day of the calendar month in which such Mortgage Loan became
151 days delinquent (such month, the "Eligible Repurchase Month"); provided
further, that any such Mortgage Loan which becomes current but thereafter
becomes delinquent may be purchased by the Master Servicer pursuant to this
Section in any ensuing Eligible Repurchase Month. The Master Servicer, in its
sole discretion, shall also have the right to purchase for its own account from
the Trust Fund at a price equal to the Purchase Price any Eligible EPD Protected
Mortgage Loan. The Master Servicer's right to purchase any such Eligible EPD
Protected Mortgage Loan shall expire on the 270th day following the date on
which such Mortgage Loan became an Eligible EPD Protected Mortgage Loan. The
Purchase Price for any Mortgage Loan purchased under this Section 3.11 shall be
deposited in the Certificate Account and the Trustee, upon receipt of a
certificate from the Master Servicer in the form of Exhibit N to this Agreement,
shall release or cause to be released to the purchaser of such Mortgage Loan the
related Mortgage File and shall execute and deliver such instruments of transfer
or assignment prepared by the purchaser of such Mortgage Loan, in each case
without recourse, as shall be necessary to vest in the purchaser of such
Mortgage Loan any Mortgage Loan released pursuant hereto and the purchaser of
such Mortgage Loan shall succeed to all the Trustee's right, title and interest
in and to such Mortgage Loan and all security and documents related thereto.
Such assignment shall be an assignment outright and not for security. The
purchaser of such Mortgage Loan shall thereupon own such Mortgage Loan, and all
security and documents, free of any further obligation to the Trustee or the
Certificateholders with respect thereto.

      (b) Countrywide may agree to a modification of any Mortgage Loan (the
"Modified Mortgage Loan") if (i) the modification is in lieu of a refinancing
and (ii) the Mortgage Rate on the Modified Mortgage Loan is approximately a
prevailing market rate for newly originated mortgage loans having similar terms
and (iii) Countrywide purchases the Modified Mortgage Loan from the Trust Fund
as described below. Effective immediately after the modification, and, in any
event, on the same Business Day on which the modification occurs, all interest
of the Trustee in the Modified Mortgage Loan shall automatically be deemed
transferred and assigned to Countrywide and all benefits and burdens of
ownership thereof, including the right to accrued interest thereon from the date
of modification and the risk of default thereon, shall pass to Countrywide. The
Master Servicer shall promptly deliver to the Trustee a certification of a
Servicing Officer to the effect that all requirements of this paragraph have
been satisfied with respect to the Modified Mortgage Loan. For federal income
tax purposes, the Trustee shall account for such purchase as a prepayment in
full of the Modified Mortgage Loan.

      Countrywide shall remit to the Master Servicer and the Master Service
shall deposit the Purchase Price for any Modified Mortgage Loan in the
Certificate Account pursuant to Section 3.05 within one Business Day after the
purchase of the Modified Mortgage Loan. Upon receipt by the Trustee of written
notification of any such deposit signed by a Servicing Officer, the Trustee
shall release to Countrywide the related Mortgage File and shall execute and
deliver such instruments of transfer or assignment, in each case without
recourse, as shall be necessary to vest in Countrywide any Modified Mortgage
Loan previously transferred and assigned pursuant

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hereto. Countrywide covenants and agrees to indemnify the Trust Fund against any
liability for any "prohibited transaction" taxes and any related interest,
additions, and penalties imposed on the Trust Fund established hereunder as a
result of any modification of a Mortgage Loan effected pursuant to this
subsection (b), any holding of a Modified Mortgage Loan by the Trust Fund or any
purchase of a Modified Mortgage Loan by Countrywide (but such obligation shall
not prevent Countrywide or any other appropriate Person from in good faith
contesting any such tax in appropriate proceedings and shall not prevent
Countrywide from withholding payment of such tax, if permitted by law, pending
the outcome of such proceedings). Countrywide shall have no right of
reimbursement for any amount paid pursuant to the foregoing indemnification,
except to the extent that the amount of any tax, interest, and penalties,
together with interest thereon, is refunded to the Trust Fund or Countrywide.

      SECTION 3.12. Trustee to Cooperate; Release of Mortgage Files.

      Upon the payment in full of any Mortgage Loan, or the receipt by the
Master Servicer of a notification that payment in full will be escrowed in a
manner customary for such purposes, the Master Servicer will immediately notify
the Trustee by delivering, or causing to be delivered a "Request for Release"
substantially in the form of Exhibit N of this Agreement. Upon receipt of such
request, the Trustee shall promptly release the related Mortgage File to the
Master Servicer, and the Trustee shall at the Master Servicer's direction
execute and deliver to the Master Servicer the request for reconveyance, deed of
reconveyance or release or satisfaction of mortgage or such instrument releasing
the lien of the Mortgage in each case provided by the Master Servicer, together
with the Mortgage Note with written evidence of cancellation on the Mortgage
Note. The Master Servicer is authorized to cause the removal from the
registration on the MERS(R) System of such Mortgage and to execute and deliver,
on behalf of the Trustee and the Certificateholders or any of them, any and all
instruments of satisfaction or cancellation or of partial or full release.
Expenses incurred in connection with any instrument of satisfaction or deed of
reconveyance shall be chargeable to the related Mortgagor. From time to time and
as shall be appropriate for the servicing or foreclosure of any Mortgage Loan,
including for such purpose, collection under any policy of flood insurance, any
fidelity bond or errors or omissions policy, or for the purposes of effecting a
partial release of any Mortgaged Property from the lien of the Mortgage or the
making of any corrections to the Mortgage Note or the Mortgage or any of the
other documents included in the Mortgage File, the Trustee shall, upon delivery
to the Trustee of a Request for Release in the form of Exhibit M signed by a
Servicing Officer, release the Mortgage File to the Master Servicer. Subject to
the further limitations set forth below, the Master Servicer shall cause the
Mortgage File or documents so released to be returned to the Trustee when the
need therefor by the Master Servicer no longer exists, unless the Mortgage Loan
is liquidated and the proceeds thereof are deposited in the Certificate Account,
in which case the Master Servicer shall deliver to the Trustee a Request for
Release in the form of Exhibit N, signed by a Servicing Officer.

      If the Master Servicer at any time seeks to initiate a foreclosure
proceeding in respect of any Mortgaged Property as authorized by this Ag