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POOLING AND SERVICING AGREEMENT

Pooling and Servicing Agreement

POOLING AND SERVICING AGREEMENT | Document Parties: HSI ASSET SECURITIZATION CORPORATION, | CITIMORTGAGE, INC | CITIBANK, N.A | WELLS FARGO BANK, N.A | DEUTSCHE BANK NATIONAL TRUST COMPANY You are currently viewing:
This Pooling and Servicing Agreement involves

HSI ASSET SECURITIZATION CORPORATION, | CITIMORTGAGE, INC | CITIBANK, N.A | WELLS FARGO BANK, N.A | DEUTSCHE BANK NATIONAL TRUST COMPANY

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Title: POOLING AND SERVICING AGREEMENT
Governing Law: Delaware     Date: 1/16/2007

POOLING AND SERVICING AGREEMENT, Parties: hsi asset securitization corporation  , citimortgage  inc , citibank  n.a , wells fargo bank  n.a , deutsche bank national trust company
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                      HSI ASSET SECURITIZATION CORPORATION,
                                   Depositor,

                               CITIMORTGAGE, INC.,
                                Master Servicer,

                                 CITIBANK, N.A.,
                            Securities Administrator

                             WELLS FARGO BANK, N.A.,
                                   Custodian,

                                       and

                      DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                     Trustee

                         POOLING AND SERVICING AGREEMENT
                          Dated as of December 1, 2006

                     HSI ASSET LOAN OBLIGATION TRUST 2006-2

                       MORTGAGE PASS THROUGH CERTIFICATES,
                                  SERIES 2006-2


<PAGE>


                             TABLE OF CONTENTS

                                                                            Page
                                 ARTICLE I
                                DEFINITIONS

                                ARTICLE II
       CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES

Section 2.01     Conveyance of Mortgage Loans..................................50

Section 2.02     Acceptance by the Custodian of the Mortgage Loans.............53

Section 2.03     Remedies for Breaches of Representations and Warranties
                with Respect to the Mortgage Loans............................54

Section 2.04     Execution and Delivery of Certificates........................55

Section 2.05     [Reserved]....................................................55

Section 2.06     [Reserved]....................................................55

Section 2.07     Representations and Warranties of the Depositor...............55

                               ARTICLE III
             ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

Section 3.01     Establishment of Certain Accounts.............................57

Section 3.02     Investment of Funds in the Distribution Account and
                the Master Servicing Account..................................58

Section 3.03     Report on Assessment of Compliance with Relevant
                Servicing Criteria............................................59

Section 3.04     Report on Attestation of Compliance with Relevant
                Servicing Criteria............................................60

Section 3.05     Annual Officer's Certificates.................................61

Section 3.06     Indemnification...............................................62

Section 3.07     Advances......................................................62

                                ARTICLE IV
                               DISTRIBUTIONS

Section 4.01     The Distribution Account......................................64

Section 4.02     Priorities of Distribution....................................64

Section 4.03     Monthly Statements to Certificateholders......................72

Section 4.04     Allocation of Realized Losses.................................74

Section 4.05     The Yield Maintenance Agreement...............................76

Section 4.06     Certain Matters Relating to the Determination of LIBOR........77

                                  ARTICLE V
                              THE CERTIFICATES

Section 5.01     The Certificates..............................................78

Section 5.02     Certificate Register; Registration of Transfer and
                Exchange of Certificates......................................78

Section 5.03     Mutilated, Destroyed, Lost or Stolen Certificates.............84

Section 5.04     Persons Deemed Owners.........................................84

Section 5.05     Access to List of Certificateholders' Names and Addresses.....84

Section 5.06     Maintenance of Office or Agency...............................84

                                  ARTICLE VI
                                 THE DEPOSITOR

Section 6.01     Liabilities of the Depositor..................................85

Section 6.02     Merger or Consolidation of the Depositor......................85

Section 6.03     Limitation on Liability of the Depositor and Others...........85

                                 ARTICLE VII
                                    DEFAULT

Section 7.01     Master Servicer to Act; Appointment of Successor..............86

Section 7.02     Notification to Certificateholders............................88

                                       -i-


<PAGE>


                                 ARTICLE VIII
                           CONCERNING THE TRUSTEE

Section 8.01     Duties of the Trustee.........................................88

Section 8.02     Certain Matters Affecting the Trustee.........................89

Section 8.03     Trustee Not Liable for Certificates or Mortgage Loans.........91

Section 8.04     Trustee May Own Certificates..................................91

Section 8.05     Trustee's Fees Indemnification and Expenses...................91

Section 8.06     Eligibility Requirements for the Trustee......................92

Section 8.07     Resignation and Removal of the Trustee........................93

Section 8.08     Successor Trustee.............................................93

Section 8.09     Merger or Consolidation of the Trustee........................94

Section 8.10     Appointment of Co-Trustee or Separate Trustee.................94

Section 8.11     [Reserved]....................................................95

Section 8.12     Commission Reporting..........................................95

                               ARTICLE IX
         ADMINISTRATION OF THE MORTGAGE LOANS BY THE MASTER SERVICER

Section 9.01     Duties of the Master Servicer; Enforcement of each
                Servicer's Obligations.......................................102

Section 9.02     Provision to the Securities Administrator of
                Loan-Level Information.......................................104

Section 9.03     [Reserved]...................................................104

Section 9.04     Maintenance of Fidelity Bond and Errors and
                Omissions Insurance..........................................104

Section 9.05     Representations and Warranties of the Master Servicer........104

Section 9.06     Master Servicer Events of Default............................106

Section 9.07     Waiver of Default............................................107

Section 9.08     Successor to the Master Servicer.............................107

Section 9.09     [Reserved]...................................................109

Section 9.10     Merger or Consolidation......................................109

Section 9.11     Resignation of the Master Servicer...........................109

Section 9.12     Assignment or Delegation of Duties by the Master Servicer....109

Section 9.13     Limitation on Liability of the Master Servicer...............110

Section 9.14     Indemnification; Third Party Claims..........................110

                                    ARTICLE X
                      CONCERNING THE SECURITIES ADMINISTRATOR

Section 10.01    Duties of Securities Administrator...........................111

Section 10.02    Certain Matters Affecting the Securities Administrator.......112

Section 10.03    Securities Administrator Not Liable for Certificates
                or Mortgage Loans............................................114

Section 10.04    Securities Administrator May Own Certificates................115

Section 10.05    Securities Administrator's Fees and Expenses.................115

Section 10.06    Eligibility Requirements for Securities Administrator........115

Section 10.07    Resignation and Removal of Securities Administrator..........116

Section 10.08    Successor Securities Administrator...........................117

Section 10.09    Merger or Consolidation of Securities Administrator..........118

Section 10.10    Assignment or Delegation of Duties by the Securities
                Administrator................................................118

                                    ARTICLE XI
                                REMIC provisions

Section 11.01    REMIC Administration.........................................118

Section 11.02    [Reserved]...................................................121

Section 11.03    Designation of REMIC(s)......................................122

Section 11.04    Distributions on Uncertificated REMIC 1 Regular Interests,
                REMIC 2 Regular Interests, and REMIC 3 Regular Interests.....122


                                       -ii-
<PAGE>


                                 ARTICLE XII
                                 TERMINATION

Section 12.01    Termination upon Liquidation or Purchase of the
                Mortgage Loans...............................................125

Section 12.02    Final Distribution on the Certificates.......................125

Section 12.03    Additional Termination Requirements..........................126

                                ARTICLE XIII
                          MISCELLANEOUS PROVISIONS

Section 13.01    Amendment....................................................127

Section 13.02    Recordation of Agreement; Counterparts.......................129

Section 13.03    Governing Law................................................129

Section 13.04    Intention of Parties.........................................129

Section 13.05    Notices......................................................130

Section 13.06    Severability of Provisions...................................131

Section 13.07    [Reserved.]..................................................131

Section 13.08    Limitation on Rights of Certificateholders...................131

Section 13.09    Certificates Nonassessable and Fully Paid....................132

Section 13.10    Rule of Construction.........................................132

Section 13.11    Waiver of Jury Trial.........................................132

                                      -iii-


<PAGE>


EXHIBITS

Exhibit A        Form of Senior Certificates and Senior Subordinate Certificate

Exhibit B        Form of Junior Subordinate Certificate

Exhibit C        Form of Class R Certificate

Exhibit D        Form of Class P Certificate

Exhibit E        Form of Initial Certification of Custodian

Exhibit F        Form of Document Certification and Exception Report of Custodian

Exhibit G        Form of Residual Transfer Affidavit

Exhibit H        Form of Transferor Certificate

Exhibit I        Form of Rule 144A Investment Letter

Exhibit J        Form of Request for Release

Exhibit K        Contents for Each Mortgage File

Exhibit L        Form of Sarbanes-Oxley Certification to be provided with
                Form 10 K

Exhibit M        List of Servicing Agreements

Exhibit N        Form of Servicing Function Participant Back-up Sarbanes Oxely
                Certification

Exhibit O        Form of Yield Maintenance Agreement

Exhibit P        [Reserved]

Exhibit Q        Transfer Agreements

Exhibit R        [Reserved]

Exhibit S        Servicing Criteria Matrix

Exhibit T        Transaction Parties

Exhibit U        Form of Annual Compliance Certificate

Exhibit V        Additional Form 10-D Disclosure

Exhibit W        Additional Form 10-K Disclosure

Exhibit X        Form 8-K Disclosure Information

Exhibit Y        Additional Disclosure Notification

                                      -iv-


<PAGE>


     THIS POOLING AND SERVICING   AGREEMENT,   dated as of December 1, 2006, among
HSI   ASSET    SECURITIZATION    CORPORATION,    as   depositor   (the    "Depositor"),
CITIMORTGAGE,   INC., a New York corporation (the "Master   Servicer"),   CITIBANK,
N.A., a national banking   association ( the "Securities   Administrator"),   WELLS
FARGO BANK, N.A., a national banking   association (the "Custodian") and DEUTSCHE
BANK NATIONAL TRUST COMPANY,   a national   banking   association,   as trustee (the
"Trustee").

                              W I T N E S S E T H:

     In consideration of the mutual   agreements   herein   contained,   the parties
hereto agree as follows:

                             PRELIMINARY STATEMENT:

     The    Depositor    intends   to   sell   Mortgage    Pass-Through    Certificates
(collectively, the "Certificates"),   to be issued hereunder in multiple classes,
which in the aggregate will evidence the entire beneficial ownership interest in
the   Trust   Fund   (as   defined   herein).   As   provided   herein,   the   Securities
Administrator   will make an   election   to treat the   entire   segregated   pool of
assets relating to the Mortgage Loans, as described in the definition of REMIC 1
below,   as a real estate   mortgage   investment   conduit (a "REMIC")   for federal
income tax purposes,   and such   segregated   pool of assets will be designated as
"REMIC 1." The Class R-I Certificates will represent the sole class of "residual
interests" in REMIC 1 for purposes of the REMIC   Provisions (as defined   herein)
under federal   income tax law. The following   table   irrevocably   sets forth the
designation,   the REMIC 1 Remittance Rate, the initial Uncertificated   Principal
Balance,   and solely for   purposes of   satisfying   Treasury   Regulation   Section
1.860G-1(a)(4)(iii), the "latest possible maturity date" for each of the REMIC 1
Regular Interests. None of the REMIC 1 Regular Interests will be certificated.


<PAGE>


<TABLE>
<CAPTION>
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
          REMIC 1                    REMIC 1                 Initial              Latest Possible              Related
  Regular Interests and            Remittance Rate         Uncertificated          Maturity Date(1)         Subgroup/Class of
    Residual Interests                                 Principal Balance                                  Certificates
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
<S>                                   <C>                   <C>                  <C>                        <C>
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 1-A                             6.00%                  $564.72             December 26, 2036          Subgroup I-1
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 2-A                             7.00%                  $659.06             December 26, 2036          Subgroup I-2
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 3-A                             7.50%                  $188.75             December 26, 2036          Subgroup I-3
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 4-A                             8.00%                  $137.66             December 26, 2036          Subgroup I-4
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 5-A                              5.50%                  $300.10             December 26, 2021          Subgroup II-1
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class P                                0.00%                    $100              December 26, 2026               All
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class I-PO                            0.00%                   $251,132            December 26, 2036           Class I-PO
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class I-IO                            6.00%                    (2)                December 26, 2036           Class I-IO
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class II-PO                           0.00%                  $18,382             December 26, 2026           Class II-PO
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class II-IO                           5.50%                    (2)               December 26, 2026            Class II-IO
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 1-ZZZ                           6.00%                 $5,647,155           December 26, 2036          Subgroup I-1
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 2-ZZZ                           7.00%                 $6,590,564           December 26, 2036          Subgroup I-2
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 3-ZZZ                           7.50%                 $1,887,545           December 26, 2036          Subgroup I-3
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 4-ZZZ                           8.00%                 $1,376,647           December 26, 2036          Subgroup I-4
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
Class 5-ZZZ                           5.50%                 $3,001,797           December 26, 2036          Subgroup II-1
----------------------------   ---------------------   ---------------------   ----------------------   ----------------------
</TABLE>

----------------------------------
(1)   Solely   for   purposes   of   Section    1.860G-1(a)(4)(iii)   of   the   Treasury
     regulations,   the Distribution Date immediately following the maturity date
     for the Mortgage Loan with the latest   maturity date has been designated as
     the "latest possible maturity date" for each REMIC 1 Regular Interest.

(2)   Neither the Class I-IO nor the Class II-IO has an Uncertificated   Principal
     Balance   and   each is   entitled   to   receive   on each   Distribution   Date a
     specified portion of the interest payable on certain Subgroup I-4 Loans and
     Subgroup II-1 Loans, respectively,   equal to the Class I-IO Notional Amount
     or the Class I-IO Notional Amount, as the case may be.

                                       -2-


<PAGE>


     As provided herein,   the Securities   Administrator   will elect to treat the
segregated   pool of   assets   consisting   of the   Uncertificated   REMIC 1 Regular
Interests as a REMIC for federal income tax purposes,   and such   segregated pool
of assets   will be   designated   as "REMIC 2." The Class R-II   Certificates   will
represent the sole class of "residual   interests" in REMIC 2 for purposes of the
REMIC Provisions   under federal income tax law. The following table   irrevocably
sets forth the   designation,   the REMIC 2 Remittance   Through Rate,   the initial
Uncertificated    Balance,    and   solely   for   purposes   of   satisfying   Treasury
Regulation Section 1.860G-1(a)(4)(iii),   the "latest possible maturity date" for
each of the REMIC 2 Regular   Interests and the general   description of the Class
R-II Certificates. None of the REMIC 2 Regular Interests will be certificated.

<TABLE>
<CAPTION>
      REMIC 2
Regular Interests           REMIC 2          Initial                   Latest           Related
  and Residual             Remittance      Uncertificated              Possible          Class of
    Interests                Rate            Balance               Maturity Date(1)    Certificates
    ---------               -----            -------               ----------------    ------------
  <S>                  <C>                        <C>      <C>                         <C>
    Class I-A-1              6.00%                        $      December 26, 2036     Class I-A-1
    Class I-A-2              6.00%                              December 26, 2036     Class I-A-2
    Class I-A-3              6.00%                              December 26, 2036     Class I-A-3,
                                                                                    Class I-A-4
    Class I-A-5              6.00%                              December 26, 2036     Class I-A-5
    Class I-A-6              6.00%                              December 26, 2036     Class I-A-6
    Class I-A-7              7.00%                              December 26, 2036     Class I-A-7,
                                                                                   Class I-A-8
    Class I-A-9              7.50%                              December 26, 2036     Class I-A-9,
                                                                                   Class I-A-10
   Class I-A-11              8.00%                              December 26, 2036     Class I-A-11
                                                                                    Class I-A-12
      Class P                0.00%                $100              ___________        Class P
    Class I-IO               6.00%                              December 26, 2036     Class I-IO
    Class I-PO               0.00%                              December 26, 2036     Class I-PO
   Class II-A-1              5.50%                              December 26, 2026     Class II-A-1
    Class II-IO              5.50%                              December 26, 2026     Class II-IO
    Class II-PO              0.00%                              December 26, 2026     Class II-PO
     Class B-1         Variable Rate(2)                         December 26, 2036     Class B-1
     Class B-2         Variable Rate(2)                          December 26, 2036     Class B-2
     Class B-3         Variable Rate(2)                         December 26, 2036     Class B-3
     Class B-4         Variable Rate(2)                         December 26, 2036     Class B-4
</TABLE>

----------------------------------
(1)   Solely   for   purposes   of   Section    1.860G-1(a)(4)(iii)   of   the   Treasury
     regulations,   the Distribution Date immediately following the maturity date
     for the Mortgage Loan with the latest   maturity date has been designated as
     the "latest possible maturity date" for each REMIC 2 Regular Interest.

(2)   The REMIC 2   Remittance   Rate for the REMIC 2 Regular   Interest   Class B-1,
     B-2, B-3, B-4, B-5 and B-6 will be a variable rate of interest equal to the
     weighted   average of the   designated   rates of each   subgroup.   For federal
     income   tax   purposes,   however,   such   REMIC   2   Remittance   Rate   on   any
     Distribution Date shall be expressed as the weighted average of the REMIC 1
     Remittance   Rates of the REMIC 1 Regular   Interests   Class 1-A,   Class 2-A,
     Class 3-A,   Class 4-A and Class 5-A,   weighted   on the basis of the related
     Uncertificated Principal Balances of such REMIC 1 Regular Interests.


<PAGE>


<TABLE>
<CAPTION>
      REMIC 2
Regular Interests           REMIC 2          Initial                   Latest           Related
  and Residual             Remittance      Uncertificated              Possible          Class of
    Interests                Rate            Balance               Maturity Date(1)    Certificates
    ---------               -----            -------               ----------------    ------------
     <S>               <C>                   <C>                 <C>                   <C>
     Class B-5         Variable Rate(2)                          December 26, 2036     Class B-5
     Class B-6         Variable Rate(2)                         December 26, 2036     Class B-6
</TABLE>

     As provided herein,   the Securities   Administrator   will elect to treat the
segregated pool of assets consisting of the REMIC 2 Regular Interests as a REMIC
for federal   income tax   purposes,   and such   segregated   pool of assets will be
designated   as REMIC 3. The Class R-III   Certificates   will   represent   the sole
class of "residual   interests"   in REMIC 3 for purposes of the REMIC   Provisions
under federal   income tax law. The following   table   irrevocably   sets forth the
designation,   remittance rate (the "REMIC 3 Remittance   Rate") and Initial Class
Certificate Balance for each of the "regular interests" in REMIC 3 (the "REMIC 3
Regular   Interests").   None   of the   Class   R-I,   Class   R-II   and   Class   R-III
Certificates have a principal balance nor an interest rate. The "latest possible
maturity date" (determined solely for purposes of satisfying Treasury regulation
Section   1.860G-1(a)(4)(iii))   for each   REMIC 3 Regular   Interest   shall be the
first   Distribution   Date that follows the stated maturity date for the Mortgage
Loan   included   in the   Trust   Fund as of the   Closing   Date   with   the   longest
remaining term to stated maturity.

                                       -3-


<PAGE>


                         THE SERIES 2006-2 CERTIFICATES

<TABLE>
<CAPTION>
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
                  Initial Principal      Related                 Initial
                     Balance or          Loan        Related      Interest                         Summary Interest    Moody's      S&P
Class              Notional Amount (1)     Group       Subgroup       Rate             Designation     Rate Formula(7)     Rating      Rating
================ ==================== ========== =========== ============ =================== ================== =========== =======
<S>               <C>                     <C>           <C>      <C>           <C>                  <C>                 <C>          <C>
Offered
Certificates:
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-1           $17,337,000           1           I-1      6.00000%      Super                Fixed               Aaa          AAA
                                                                          Senior/
                                                                           Non-Accelerating(6)
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-2           $40,672,000           1           I-1      6.00000%      Senior/Sequential    Fixed               Aaa          AAA
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-3           $40,672,000            1           I-1      Adjustable    Super                LIBOR + 0.60%(7)    Aaa          AAA
                                                             Rate          Senior/Sequential/
                                                                           Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-4           $40,672,000(2)        1           I-1      Adjustable    Senior/Notional/     5.40% - LIBOR(7)     Aaa          AAA
                                                             Rate          Inverse Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-5             $189,699             1           I-1      6.00000%      Senior/Sequential    Fixed               Aaa          AAA
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-6           $3,047,000            1           I-1      6.00000%      Senior               Fixed               Aaa          AAA
                                                                          Support/
                                                                           Non-Accelerating(6)
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-7          $118,943,983           1           I-2      Adjustable    Senior/Pass-Through LIBOR + 0.37%(7)    Aaa          AAA
                                                             Rate          Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-8          $118,943,983(2)        1           I-2      Adjustable    Senior/Notional      6.63% - LIBOR(7)    Aaa          AAA
                                                             Rate          Inverse Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-9           $34,065,691           1           I-3      Adjustable    Senior/Pass-Through LIBOR + 0.30%(7)    Aaa          AAA
                                                              Rate          Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-10          $34,065,691(2)        1           I-3      Adjustable    Senior/Notional      7.20% - LIBOR(7)    Aaa          AAA
                                                             Rate          Inverse Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-11          $24,845,192           1           I-4      Adjustable    Senior/Pass-Through LIBOR + 0.20%(7)    Aaa          AAA
                                                             Rate          Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-A-12          $24,845,192(2)        1           I-4      Adjustable    Senior/Notional      7.80% - LIBOR(7)    Aaa          AAA
                                                              Rate          Inverse Floater
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-IO             $590,041(2)          1           I-4      6.00000%      Senior/Notional      Fixed               Aaa          AAA
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class I-PO            $251,132(3)            1           I-1          (3)       Senior/Principal     N/A                 Aaa          AAA
                                                                          Only
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class II-A-1          $54,156,905           2           II-1     5.50000%      Senior/Pass-Through Fixed               Aaa          AAA
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class II-IO                                2           II-1     5.50000%      Senior/Notional      Fixed               Aaa          AAA
                 $6,991,827(2)
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class II-PO           $18,382(3)            2           II-1         (3)       Senior/Principal     N/A                 Aaa          AAA
                                                                           Only
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-1             $8,275,332          1, 2          (5)      Variable      Subordinate          weighted average    Aa3          AA
                                                             Rate                              rate -
                                                                                              0.57687234%
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-2             $3,527,027          1, 2          (5)      Variable      Subordinate          weighted average    A3            A
                                                             Rate                              rate - 0.32687234%
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-3             $2,116,216          1, 2          (5)      Variable      Subordinate          weighted average    Baa3         BBB
                                                             Rate                              rate
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Total Offered:       $348,117,559
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Non-Offered
Certificates(4):
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-4             $2,116,216          1, 2          (5)      Variable      Subordinate          weighted average    NR           BB
                                                             Rate                              rate
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-5             $1,763,513          1, 2          (5)      Variable      Subordinate          weighted average    NR           B
                                                             Rate                              rate
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class B-6              $705,404           1, 2          (5)      Variable      Subordinate          (8)                 NR           NR
                                                              Rate
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Class P                  $100             1, 2          (5)      0.00%         Prepayment Charges   N.A                 NR           NR
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
</TABLE>

                                      -4-
<PAGE>


<TABLE>
<S>                  <C>                <C>         <C>          <C>           <C>                  <C>                 <C>          <C>
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Total                 $4,585,133
Non-Offered:
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
Total:               $352,702,692
---------------- -------------------- ---------- ----------- ------------ ------------------- ------------------ ----------- -------
</TABLE>

(1)   Approximate. Subject to variance of plus or minus 5%.
(2)   Interest-only   certificates that will accrue interest on a notional amount.
      These certificates will not receive distributions of principal.
(3)   The Class I-PO and Class II-PO certificates are principal-only certificates
     and are not entitled to payment of interest.
(4)   The issuing entity will also issue the Class R certificates and the Class P
     Certificates, which are entitled to receive any prepayment penalties on the
     mortgage loans.
(5)   The Class B-1,   Class B-2,   Class B-3,   Class B-4,   Class B-5 and Class B-6
     certificates   will be related to subgroups   I-1, I-2, I-3, I-4 and II-1 and
     will receive a variable rate of interest   based on the weighted   average of
     the designated rates of each subgroup.
(6)   The Class I-A-1 and Class   I-A-6   certificates   will not receive   principal
     payments   at   the   same   rate   as the   other   Senior   Certificates   because
     principal   payments   generally will not be distributable to the Class I-A-1
     and Class I-A-6 certificates until the Distribution Date in January 2012.
(7)   Subject to minimum and maximum rates as described in this Agreement.
(8)   The Class B-6   Certificates   will accrue interest at a per annum rate equal
     to (i) the weighted average of the designated rates applicable to subgroups
     I-1, I-2, I-3, I-4 and II-1 on the basis of the group   subordinate   amounts
     thereof plus ((0.57687234%   multiplied by the Class Certificate   Balance of
     the Class   B-1   Certificates)   plus   (0.32687234%   multiplied   by the Class
     Certificate   Balance   of the Class B-2   Certificates)   divided by the Class
     Certificate Balance of the Class B-6 Certificates.

                                       -5-


<PAGE>


<TABLE>
<CAPTION>
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
                                             Final Scheduled
               Record       Delay/Acrual        Distribution           Minimum         Incremental
Class           Date(1)        Period(2)            Date(3)         Denomination(4)    Denomination        CUSIP Number        ISIN Number
=============   =========   ================   =================   ================   ================   ==================   =============
<S>                <C>          <C>              <C>                    <C>                 <C>             <C>                <C>
Offered
Certificates:
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-1        DD           24 day           December 2036          $25,000             $1              40431H AA 5        US40431HAA59
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-2        DD           24 day            December 2036          $25,000             $1              40431H AB 3        US40431HAB33
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-3        DD             0 day           December 2036          $25,000             $1              40431H AC 1        US40431HAC16
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-4        DD            0 day           December 2036          $25,000             $1              40431H AD 9        US40431HAD98
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-5        DD           24 day           December 2036          $25,000             $1              40431H AE 7        US40431HAE71
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-6        DD           24 day           December 2036          $25,000             $1              40431H AF 4        US40431HAF47
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-7        DD            0 day           December 2036          $25,000             $1              40431H AG 2        US40431HAG20
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-8        DD            0 day           December 2036          $25,000             $1              40431H AH 0        US40431HAH03
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-9        DD            0 day           December 2036          $25,000             $1              40431H AJ 6        US40431HAJ68
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-10       DD            0 day           December 2036          $25,000             $1              40431H AK 3        US40431HAK32
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-11       DD            0 day           December 2036          $25,000             $1              40431H AL 1        US40431HAL15
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-A-12       DD            0 day           December 2036          $25,000             $1              40431H AM 9        US40431HAM97
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-IO         DD           24 day           December 2036          $25,000             $1              40431H AN 7        US40431HAN70
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class I-PO         DD             N/A            December 2036          $25,000             $1              40431H AP 2        US40431HAP29
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class II-A-1       DD           24 day           December 2021          $25,000             $1              40431H AQ 0        US40431HAQ02
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class II-IO        DD           24 day           December 2021          $25,000             $1              40431H AR 8        US40431HAR84
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class II-PO        DD             N/A            December 2021          $25,000             $1              40431H AS 6        US40431HAS67
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-1          DD           24 day           December 2036          $25,000             $1              40431H AT 4        US40431HAT41
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-2          DD           24 day           December 2036          $25,000             $1              40431H AU 1        US40431HAU14
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-3          DD           24 day           December 2036          $25,000             $1              40431H AV 9        US40431HAV96
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------

-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Non-Offered
Certificates:
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-4          CM           24 day           December 2036           $25,000             $1              40431H AZ 0        US40431HAZ01
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-5          CM           24 day           December 2036          $25,000             $1              40431H BA 4        US40431HBA41
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
Class B-6          CM           24 day           December 2036          $25,000             $1              40431H BB 2        US40431HBB24
-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------

-------------   ---------   ----------------   -----------------   ----------------   ----------------   ------------------   -------------
</TABLE>

                                       -6-


<PAGE>


(1)   CM = For any distribution date, the last business day of the calendar month
     immediately   preceding the   distribution   date.   DD = For any   distribution
     date, the close of business on the business day   immediately   preceding the
     distribution date.

(2)   24 Day = For any distribution date, the interest accrual period will be the
      calendar   month   immediately   preceding   the   month   in which   the   related
     distribution   date occurs. 0 Day = For any distribution   date, the interest
     accrual period will be the period   beginning on the   immediately   preceding
     distribution   date   (or   the   closing   date,   in   the   case   of   the   first
     distribution   date) and ending on the calendar day   immediately   before the
     related distribution date.

(3)   Calculated   as the   distribution   date in the month   following the month in
     which the latest maturity date of any mortgage loan included in the related
     subgroup occurs.

(4)   With respect to the initial European investors,   the underwriters will only
     sell offered certificates in minimum total investment amounts of $100,000.

                                       -7-


<PAGE>


     The Mortgage   Loans have an aggregate   Stated   Principal   Balance as of the
Cut-off Date of $352,702,693.

     Set   forth   below   are   designations   of   Classes   of   Certificates   to the
categories used herein:

Adjustable Rate Certificates........... Floater Certificates and Inverse Floater
                                        Certificates.

Book-Entry Certificates................ All Classes of   Certificates   other than
                                         the Junior Subordinate Certificates, the
                                        Class   R    Certificates    and    Class   P
                                        Certificates.

Class A Certificates................... Class I-A-1,   Class I-A-2,   Class I-A-3,
                                        Class I-A-4,   Class I-A-5,   Class I-A-6,
                                        Class I-A-7,   Class I-A-8,   Class I-A-9,
                                        Class I-A-10, Class I-A-11, Class I-A-12
                                        and Class II-A-1 Certificates.

Class I-A Certificates................. The Class I-A-1, Certificates, the Class
                                        I-A-2     Certificates,     Class     I-A-3
                                         Certificates,      the     Class      I-A-4
                                        Certificates,   Class I-A-5 Certificates,
                                        Class   I-A-6   Certificates,   Class I-A-7
                                         Certificates,   Class I-A-8 Certificates,
                                        Class I-A-9   Certificates,   Class I-A-10
                                        Certificates,   Class I-A-11 Certificates
                                         and Class I-A-12 Certificates.

Class II-A Certificates................ The Class II-A-1 Certificates.

Class IO Certificates.................. Class I-IO and Class II-IO Certificates

Class P Certificates................... The Class P Certificates.

Class PO Certificates.................. Class I-PO and Class II-PO Certificates

                                       -8-


<PAGE>


Class R Certificates................... Class R-I,   Class   R-II and Class   R-III
                                         Certificates

ERISA-Restricted Certificates.......... The   Junior   Subordinate    Certificates,
                                        Class     R     Certificates,     Class    P
                                        Certificates   and any Certificate with a
                                        rating   which   falls   below   the   lowest
                                        applicable   permitted   rating   under the
                                        Underwriters' Exemption.

Floater Certificates:.................. Class I-A-3,   Class I-A-7,   Class I-A-9,
                                        and Class I-A-11 Certificates

Group 1 Certificates................... Any one of the Class I-A-1, Class I-A-2,
                                        Class I-A-3,   Class I-A-4,   Class I-A-5,
                                        Class I-A-6,   Class I-A-7,   Class I-A-8,
                                        Class I-A-9, Class I-A-10, Class I-A-11,
                                        Class   I-A-12,   Class I-IO and the Class
                                        I-PO.

Group 2 Certificates................... Any one of the Class II-A-1, Class II-IO
                                        and the Class II-PO.

Interest Only Certificates:............ Class   IO    Certificates,    Class   I-A-4
                                        Certificates,   Class I-A-8 Certificates,
                                        Class   I-A-10    Certificates   and   Class
                                        I-A-12 Certificates.

Inverse Floater Certificates:.......... Class I-A-4,   Class I-A-8,   Class I-A-10
                                        and Class I-A-12 Certificates

Junior Subordinate Certificates........ Class   B-4,   Class   B-5   and   Class   B-6
                                         Certificates.

NAS Certificates....................... Any one of the Class   I-A-1 or the Class
                                        I-A-6 Certificates.

                                       -9-


<PAGE>


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

Physical Certificates:................. Any   one   of   the   Class   P or   Class   R
                                        Certificates.

Private Certificate.................... Any   Junior    Subordinate    Certificate,
                                        Class    R    Certificate    or    Class    P
                                        Certificate.

Rating Agencies........................ Moody's and Standard & Poor's.

Regular Certificates................... All Classes of   Certificates   other than
                                        the Class R Certificates.

Residual Certificates.................. Class R Certificates.

Senior Certificate..................... Any one of the Group 1   Certificates   or
                                        the Group 2 Certificates.

Senior Subordinate Certificates........ Class   B-1,   Class   B-2   and   Class   B-3
                                         Certificates.

Senior Support Certificates............ The Class I-A-6 Certificates.

Subgroup I-1 Certificates.............. Any one of the Class I-A-1 Certificates,
                                        Class   I-A-2   Certificates,   Class I-A-3
                                        Certificates,   Class I-A-4 Certificates,
                                        Class   I-A-5   Certificates,   Class I-A-6
                                        Certificates     or    the    Class     I-PO
                                         Certificates.

                                       -10-


<PAGE>


Subgroup I-2 Certificates.............. Any one of the Class I-A-7   Certificates
                                        or the Class I-A-8 Certificates.

Subgroup I-3 Certificates.............. Any one of the Class I-A-9   Certificates
                                        or the Class I-A-10 Certificates.

Subgroup I-4 Certificates.............. Any     one    of    the     Class     I-A-11
                                         Certificates,     the     Class     I-A-12,
                                        Certificates     or    the    Class     I-IO
                                        Certificates.

Subgroup II-1 Certificates............. Any     one    of    the     Class     II-A-1
                                        Certificates,      the     Class      II-IO
                                        Certificates     or    the    Class    II-PO
                                        Certificates.

Subordinate Certificate................ Any   one   of   the    Senior    Subordinate
                                        Certificates    or    Junior    Subordinate
                                        Certificates.

Super Senior Certificates.............. The   Class   I-A-1   Certificates   or   the
                                        Class I-A-3 Certificates.


                                    ARTICLE I

                                   DEFINITIONS

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

     10-K Filing Deadline: As defined in Section 8.12(a)(ii).

     Accepted   Servicing   Practices:   With respect to any Mortgage   Loan and the
related Servicer,   the servicing and administration of such Mortgage Loan (i) in
the same manner in which, and with the same care, skill,   prudence and diligence
with which such Servicer   generally   services and administers   similar   mortgage
loans   with   similar   mortgagors   (A)   for   other   third   parties,    giving   due
consideration    to   customary   and   usual    standards   of   practice   of   prudent
institutional residential mortgage lenders servicing their own mortgage loans or
(B) held in such   Servicer's own portfolio,   whichever   standard is higher,   and
(ii) in accordance   with   applicable   local,   state and federal laws,   rules and
regulations.

                                       -11-


<PAGE>


     Account: Any of the Collection Accounts,   the Master Servicing Account, the
Reserve Fund, the Class P Reserve Fund, the Distribution   Account and any Escrow
Account. Each Account shall be an Eligible Account.

     Accrued Certificate   Interest:   With respect to each Distribution Date, (a)
in the case of each class of Offered   Certificates (other than the Interest Only
Certificates   and Class PO   Certificates)   interest   accrued   during the related
Interest Accrual Period on the Class   Certificate   Balance thereof,   immediately
prior to that Distribution Date at the related   Pass-Through Rate and (b) in the
case of the Interest   Only   Certificates,   interest   accrued   during the related
Interest Accrual Period on the related Notional Amount immediately prior to that
Distribution Date at the   then-applicable   Pass-Through Rate that Class for that
Distribution   Date.   In each case Accrued   Certificate   Interest on any Class of
Certificates will be reduced by the amount of:

          (i)   Prepayment   Interest   Shortfalls   on the   Mortgage   Loans   in the
     related Loan Group (to the extent not offset by the related Servicer with a
     payment of   Compensating   Interest as   provided   in the   related   Servicing
     Agreement);

          (ii) the   interest   portions   of   Realized   Losses,   including   Excess
     Special Hazard Losses,   Excess Fraud Losses,   Excess   Bankruptcy Losses and
     Extraordinary   Losses on the   Mortgage   Loans   included in the related Loan
     Group not allocated   solely to one or more specific Classes of Certificates
     pursuant to Section 4.04;

          (iii) the   interest   portion of any P&I   Advances   that were made with
     respect to delinquencies on the Mortgage Loans included in the related Loan
     Group that were ultimately   determined under the terms of this Agreement to
     be, and reported to the Master   Servicer and the   Securities   Administrator
     under the terms of this Agreement as, Excess Special Hazard Losses,   Excess
     Fraud Losses, Excess Bankruptcy Losses or Extraordinary Losses; and

          (iv) any other interest shortfalls not allocated solely to one or more
     Specific   Classes   of   Certificates   pursuant   to Section   4.04,   including
     interest that is not collectible from the Mortgagor   pursuant to the Relief
     Act.

     The related Loan Group Senior   Percentage of these   reductions with respect
to the related Loan Group,   will be   allocated   among the Holders of the related
Senior   Certificates,   in   proportion   to the   amounts   of   Accrued   Certificate
Interest that would have been payable to those Certificates on that Distribution
Date absent such reductions. The remainder of these reductions will be allocated
among   the   Holders   of   the   Subordinate   Certificates,   in   proportion   to the
respective amounts of Accrued Certificate   Interest that would have been payable
to those   Certificates   on that   Distribution   Date absent such   reductions.   In
addition to that portion of the reductions   described in the preceding sentences
that are allocated to any Class of Subordinate Certificates, Accrued Certificate
Interest   on such   Class of   Subordinate   Certificates   will be   reduced   by the
interest   portion of Realized Losses that are allocated   solely to such Class of
Subordinate Certificates pursuant to Section 4.04.

     Additional Disclosure Notification: The form of notice set forth on Exhibit
Y.

     Additional Form 10-D Disclosure: As defined in Section 8.12(a)(i).

                                      -12-


<PAGE>


     Additional Form 10-K Disclosure: As defined in Section 8.12(a)(ii).

     Advance: Any P&I Advance or Servicing Advance.

     Affiliate:   With   respect   to any   Person,   any other   Person   controlling,
controlled by or under common   control with such first Person.   For the purposes
of this   definition,   "control"   means the power to direct   the   management   and
policies of such Person,   directly or indirectly,   whether through the ownership
of voting securities,   by contract or otherwise; and the terms "controlling" and
"controlled" have meanings correlative to the foregoing.

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

     Amounts   Held   for   Future   Distribution:   As to   the   Certificates   on any
Distribution   Date, the aggregate amount held in the Collection   Accounts of the
Servicers at the close of business on the related   Determination Date on account
of   (i)   Principal   Prepayments,    Insurance   Proceeds,   Condemnation   Proceeds,
Liquidation   Proceeds and   Subsequent   Recoveries on the Mortgage Loans received
after the end of the related   Prepayment Period and (ii) all Scheduled   Payments
on the Mortgage Loans due after the end of the related Due Period.

     Assignment of Mortgage:   An assignment of the Mortgage,   notice of transfer
or equivalent   instrument in recordable form (other than the assignee's name and
recording   information not yet returned from the recording   office),   reflecting
the sale of the Mortgage to the Trustee.

     Available Funds: With respect to any Distribution Date and each Loan Group,
to the extent   received by the Securities   Administrator   (x) the sum of (i) all
scheduled   installments   of interest   (net of the related   Expense   Fees and any
Lender paid Primary Mortgage Insurance Policy premiums) and principal due on the
Due Date on the related Mortgage Loans in the related Due Period and received by
the Servicers on or prior to the related   Determination   Date, together with any
P&I   Advances in respect   thereof;   (ii) all   Condemnation   Proceeds,   Insurance
Proceeds,   Liquidation   Proceeds   and   Subsequent   Recoveries   received   by   the
Servicers   during   the   related    Prepayment    Period   (in   each   case,   net   of
unreimbursed   expenses   incurred in connection with a liquidation or foreclosure
and   unreimbursed   Advances,   if   any);   (iii)   all   curtailments   or   Principal
Prepayments   in Full on the related   Mortgage   Loans   received by the   Servicers
during the related   Prepayment   Period together with all   Compensating   Interest
paid   by   the   Servicers   in   connection   therewith   (excluding   any   Prepayment
Charges);    (iv)   all   Substitution   Adjustment   Amounts   with   respect   to   the
substitutions of Mortgage Loans in such Loan Group that occur on or prior to the
related   Determination   Date;   (v) all   amounts   received   with   respect to such
Distribution   Date   as the   Repurchase   Price   in   respect   of a   Mortgage   Loan
repurchased   by a Mortgage Loan Seller or the Sponsor on or prior to the related
Determination Date; and (vi) the proceeds with respect to the termination of the
Trust Fund   pursuant to clause (a) of Section   12.01;   reduced by (y) amounts in
reimbursement for Advances previously made with respect to the Mortgage Loans in
such Loan Group and other amounts as to which the Servicers,   the Depositor, the
Master Servicer, the Securities   Administrator or the Trustee are entitled to be
paid or reimbursed pursuant to the Servicing Agreements or this Agreement.

                                      -13-


<PAGE>


     Available Funds Cap: with respect to any Distribution Date on or before the
Distribution   Date in August   2010 and the Class I-A-3   Certificates,   6.00% per
annum plus amounts,   if any, paid   pursuant to the Yield   Maintenance   Agreement
(which shall not be part of any REMIC   hereunder)   and on deposit in the Reserve
Fund (which shall not be part of any REMIC   hereunder)   up to an amount equal to
the Yield Supplement Amount for that Distribution Date, expressed as a per annum
rate.   With respect to any   Distribution   Dates after the   Distribution   Date in
August 2010, 6.00% per annum.

     Bankruptcy   Amount:   As of any date of   determination,   an amount   equal to
$100,000 as reduced by (i) the aggregate   amount of Bankruptcy   Losses allocated
solely to one or more   specific   Classes   of   Certificates   in   accordance   with
Section 4.04 and (ii) any   permissible   reductions in the   Bankruptcy   Amount as
evidenced by a letter of each Rating Agency to the Securities   Administrator and
the Master   Servicer to the effect that any such   reduction will not result in a
downgrading, qualification or withdrawal of the then current ratings assigned to
the Classes of Certificates rated by it.

     Bankruptcy   Losses:   Any Realized   Losses   attributable   to certain actions
which may be taken by a bankruptcy   court in   connection   with a Mortgage   Loan,
including a reduction by a bankruptcy court of the Stated   Principal   Balance of
or the Mortgage Rate on a Mortgage Loan or an extension of maturity.

     Back-up Certification: As defined in Section 3.05.

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

     Business   Day: Any day other than (i) Saturday or Sunday,   or (ii) a day on
which banking and savings and loan institutions,   in (a) the States of New York,
California,   Maryland or Minnesota,   (b) the Commonwealth of Pennsylvania or any
other State in which any Servicer's servicing operations are located, or (c) any
State in which   the   Corporate   Trust   Office   is   located,   are   authorized   or
obligated by law or executive order to be closed.

     Cash Liquidation:   As to any defaulted   Mortgage Loan other than a Mortgage
Loan as to which an REO Acquisition   occurred, a determination by the applicable
Servicer that it has received all Insurance Proceeds,   Liquidation   Proceeds and
other   payments or cash   recoveries   which such Servicer   reasonably and in good
faith expects to be finally recoverable with respect to such Mortgage Loan.

     Certificate:   Any   one   of the   Certificates   executed   by   the   Securities
Administrator in substantially the forms attached hereto as exhibits.

     Certificate   Group: As applicable,   each of the Subgroup I-1   Certificates,
the Subgroup I-2 Certificates,   the Subgroup I-3 Certificates,   the Subgroup I-4
Certificates or the Subgroup II-1 Certificates.

     Certificate Owner: With respect to a Book-Entry Certificate, the Person who
is the beneficial owner of such Book-Entry Certificate.

     Certificate Register: The register maintained pursuant to Section 5.02.

                                      -14-


<PAGE>


     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   100.00%   of the   Percentage
Interests   evidenced   by a Class of   Certificates,   such   Certificates   shall be
deemed to be Outstanding for purposes of any provision   hereof that requires the
consent of the Holders of Certificates   of a particular   Class as a condition to
the taking of any action hereunder.   The Securities Administrator 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.

     Certification Parties: As defined in Section 3.05.

     Certifying Person: As defined in Section 3.05.

     Citibank: Citibank, N.A. or its successor in interest.

     CitiMortgage: CitiMortgage, Inc. or its successor in interest.

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

     Class I-A Certificates: As specified in the Preliminary Statement.

     Class I-A-1 Certificates: All Certificates bearing the Class designation of
"Class I-A-1".

     Class I-A-2 Certificates: All Certificates bearing the Class designation of
"Class I-A-2".

     Class I-A-3 Certificates: All Certificates bearing the Class designation of
"Class I-A-3".

     Class I-A-4 Certificates: All Certificates bearing the Class designation of
"Class I-A-4".

     Class I-A-5 Certificates: All Certificates bearing the Class designation of
"Class I-A-5".

     Class I-A-6 Certificates: All Certificates bearing the Class designation of
"Class I-A-6".

     Class I-A-7 Certificates: All Certificates bearing the Class designation of
"Class I-A-7".

                                      -15-


<PAGE>


     Class I-A-8 Certificates: All Certificates bearing the Class designation of
"Class I-A-8".

     Class I-A-9 Certificates: All Certificates bearing the Class designation of
"Class I-A-9".

     Class I-A-10   Certificates:   All Certificates bearing the Class designation
of "Class I-A-10".

     Class I-A-11   Certificates:   All Certificates bearing the Class designation
of "Class I-A-11".

     Class I-A-12   Certificates:   All Certificates bearing the Class designation
of "Class I-A-12".

     Class I-IO Notional Amount: Class I-IO Notional Amount on each Distribution
Date will be equal to the   aggregate   Stated   Principal   Balance of the Mortgage
Loans in Loan Group I having Net Mortgage   Rates   greater than or equal to 8.00%
per   annum   (the   "Loan   Group I Premium   Loans")   multiplied   by the   following
fraction:

                    weighted average Net Mortgage Rate of all
                     Loan Group I Premium Loans minus 8.00%
                           -------------------------
                                      6.00%.

     Class II-A Certificates: The Class II-A-1 Certificates.

     Class II-A-1   Certificates:   All Certificates bearing the Class designation
of "Class II-A-1".

     Class   II-IO   Notional    Amount:    Class   II-IO   Notional   Amount   on   each
Distribution Date will be equal to the aggregate Stated Principal Balance of the
Mortgage   Loans in Loan Group II having Net Mortgage Rates greater than or equal
to 5.50% per   annum   (the   "Loan   Group II   Premium   Loans")   multiplied   by the
following fraction:

                    weighted average Net Mortgage Rate of all
                     Loan Group II Premium Loans minus 5.50%
                            -------------------------
                                     5.50%.

     Class A Certificates: As specified in the Preliminary Statement.

     Class B-1 Certificates:   All Certificates   bearing the Class designation of
"Class B-1".

     Class B-2 Certificates:   All Certificates   bearing the Class designation of
"Class B-2".

                                      -16-


<PAGE>


     Class B-3 Certificates:   All Certificates   bearing the Class designation of
"Class B-3".

     Class B-4 Certificates:   All Certificates   bearing the Class designation of
"Class B-4".

      Class B-5 Certificates:   All Certificates   bearing the Class designation of
"Class B-5".

     Class B-6 Certificates:   All Certificates   bearing the Class designation of
"Class B-6".

     Class Certificate Balance:   With respect to any Offered Certificate,   other
than the Interest Only Certificates, as of any date of determination,   an amount
equal to the initial Class   Certificate   Balance of that Certificate   reduced by
the aggregate of (a) all amounts allocable to principal   previously   distributed
with respect to that Certificate and (b) any reductions in the Class Certificate
Balance   of   that   Certificate   deemed   to   have   occurred   in   connection   with
allocations   of   Realized   Losses in the   manner   described   in this   Agreement,
provided   that,   the Class   Certificate   Balance   of any   Class of   Certificates
outstanding   with the Highest   Priority to which   Realized   Losses   related to a
Mortgage Loan, other than Excess Bankruptcy Losses,   Excess Fraud Losses, Excess
Special Hazard Losses and   Extraordinary   Losses,   have been allocated   shall be
increased   by any   Subsequent   Recoveries   related   to that   Mortgage   Loan   not
previously   allocated as set forth in Section 4.02(h), and the Class Certificate
Balance of the Class of Certificates   with a Class   Certificate   Balance greater
than zero with the Lowest   Priority shall be further   reduced by an amount equal
to the percentage   interest   evidenced thereby multiplied by the excess, if any,
of   (i)   the   then-aggregate    Class   Certificate   Balance   of   all   Classes   of
Certificates   then   outstanding   over (ii) the   then-aggregate   Stated Principal
Balance of all of the Mortgage Loans.

     Class P Certificates:   All   certificates   bearing the designation of "Class
P".

     Class P Reserve Fund: The Eligible Account established   pursuant to Section
3.01(e).

     Class PO   Collection   Shortfall:   With   respect to each Loan Group and each
Cash   Liquidation or REO   Disposition   of a Discount   Mortgage Loan in such Loan
Group in connection with each Distribution Date or any prior   Distribution Date,
the extent that (1) the amount   included under clause (iii) of the definition of
Class PO Principal   Distribution   Amount for that Distribution Date is less than
(2) the amount described in (a) under clause (iii) of the definition of Class PO
Principal Distribution Amount.

     Class PO Principal   Distribution   Amount:   With respect to any Distribution
Date and each Loan Group, an amount equal to the aggregate of:

          (i) the   related   Discount   Fraction of the   principal   portion of the
     Scheduled   Payment on each Discount Mortgage Loan in the related Loan Group
     due during the related Due Period,   whether or not   received on or prior to
     the related   Determination   Date, less the related Discount Fraction of the
     principal portion of any related Debt Service

                                      -17-


<PAGE>


     Reductions which together with other Bankruptcy Losses are in excess of the
     Bankruptcy Amount;

          (ii) the related   Discount   Fraction of the   principal   portion of all
     unscheduled   collections on each Discount Mortgage Loan in the related Loan
     Group   received   during the preceding   calendar   month or, in the case of a
     Principal   Prepayment,   during the related   Prepayment   Period   (other than
     amounts   received in connection with a Cash   Liquidation or REO Disposition
     of a Discount   Mortgage Loan in the related Loan Group   described in clause
     (iii) below)   including   Principal   Prepayments and repurchases of Discount
     Mortgage   Loans (or, in the case of a   substitution   of a Deleted   Mortgage
     Loan that is a Discount   Mortgage Loan, the Discount Fraction of the amount
     of any Substitution   Adjustment Amount deposited in the Collection   Account
     in connection with such substitution);

          (iii) in connection with the Cash   Liquidation or REO Disposition of a
     Discount Mortgage Loan in the related Loan Group that did not result in any
     Excess Special Hazard Losses, Excess Fraud Losses, Excess Bankruptcy Losses
     or   Extraordinary   Losses,   an   amount   equal   to the   lesser   of   (a)   the
     applicable   Discount   Fraction   of the   Stated   Principal   Balance   of that
     Discount   Mortgage Loan immediately prior to that Distribution Date and (b)
     the aggregate   amount of collections on that Discount   Mortgage Loan to the
     extent applied as recoveries of principal;

          (iv) any amounts allocable to principal for the related Loan Group for
     any previous   Distribution Date calculated   pursuant to clauses (i) through
     (iii) above that remain undistributed; and

          (v)   an   amount   equal   to   the   aggregate   of the   related   Class   PO
     Collection   Shortfalls   for all   Distribution   Dates   on or   prior   to such
     Distribution   Date,   less any   amounts   paid under   this   clause on a prior
     Distribution Date, until paid in full;   provided,   that distributions under
     this clause (v) shall only be made to the extent of Eligible   Funds for the
     related Loan Group on any Distribution Date.

     Notwithstanding   the foregoing,   on or after the Credit   Support   Depletion
Date,   the   Class   PO   Principal    Distribution    Amount   with   respect   to   any
Distribution   Date and Loan   Group   will   equal   the   Discount   Fraction   of the
principal portion of Scheduled Payments and all collections other than Scheduled
Payments   received or advanced in respect of the Discount   Mortgage Loans in the
related Loan Group.

     Class R Certificates: As set forth in the Preliminary Statement.

     Closing Date: December 28, 2006.

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

     Collection Account:   With respect to each Servicer,   the account defined as
"Custodial Account" in the related Servicing Agreement.

                                      -18-


<PAGE>


     Commission: The United States Securities and Exchange Commission.

     Compensating   Interest:   For any   Distribution   Date, the lesser of (a) the
amount,   if any, by which the Prepayment   Interest   Shortfall   related to a Loan
Group,   if any,   for such   Distribution   Date,   with   respect   to all   voluntary
Principal   Prepayments   for such Loan Group   (excluding   any payments   made upon
liquidation of any Mortgage Loan) exceeds all Prepayment   Interest   Excesses for
such   Distribution Date and for such Loan Group, and (b) the aggregate amount of
the Servicing Fees actually   retained by or paid to the applicable   Servicer for
such Distribution Date and for such Loan Group.

     Condemnation   Proceeds: All awards or settlements in respect of a Mortgaged
Property, whether permanent or temporary,   partial or entire, by exercise of the
power of eminent domain or condemnation.

     Corporate Trust Office: With respect to the Securities   Administrator,   (i)
for transfer,   presentation or surrender of Certificates, the office at 111 Wall
Street, 15th Floor Window, New York, New York 10005, Attention:   Corporate Trust
Services - HALO 2006-2,   and (ii) for all other purposes,   388 Greenwich Street,
14th Floor, New York, New York 10013,   Attention:   Structured Finance Agency and
Trust - HALO 2006-2 or at such other address as the Securities Administrator may
designate from time to time by notice to the Certificateholders,   the Depositor,
the Master Servicer and the Trustee. With respect to the Trustee, the designated
office of the Trustee in the State of   California at which any   particular   time
its corporate   trust   business with respect to this   Agreement is   administered,
which office at the date of the   execution of this   Agreement is located at 1761
East St.   Andrew   Place,   Santa Ana,   California   92705 4934,   Attention:   Trust
Administration   - HB06L2,   facsimile   number (714)   247-6329,   and its telephone
number is (714)   247-6000 and which is also the address to which   notices to and
correspondence with the Trustee under this Agreement should be directed.

     Countrywide Servicing: Countrywide Home Loans Servicing LP.

     Credit Support   Depletion   Date: The first   Distribution   Date on which the
aggregate Class Certificate   Balances of the Subordinate   Certificates have been
reduced to zero.

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

     Custodial File: The meaning assigned to such term in Section 2.01(b).

     Custodian:   Initially,   Wells Fargo, or any successor   custodian   appointed
hereunder.

     Cut-off Date: December 1, 2006.

     Cut-off   Date   Pool   Principal   Balance:   The   aggregate   Stated   Principal
Balances of all Mortgage Loans as of the Cut-off Date.

     Cut-off   Date   Principal   Balance:   As to any   Mortgage   Loan,   the   Stated
Principal Balance thereof as of the close of business on the Cut-off Date.

                                      -19-


<PAGE>


     Data   Tape   Information:   With   respect   to each   Mortgage   Loan,   the same
information   (provided   as of the   Cut-off   Date)   included   in the data   fields
specified   under the   definition of "Mortgage   Loan   Schedule" in the applicable
Transfer Agreement,   with such additions and modifications as agreed upon by the
applicable Mortgage Loan Seller and the Depositor.

     Debt Service Reduction: With respect to any Mortgage Loan, a reduction by a
court   of   competent   jurisdiction   in a   proceeding   under   the   United   States
Bankruptcy   Code in the   Scheduled   Payment for such   Mortgage Loan which 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.

     Deficient Valuation:   With respect to any Mortgage Loan, a valuation of the
related   Mortgaged   Property by a court of competent   jurisdiction   in an amount
less than   then   outstanding   principal   balance   of the   Mortgage   Loan,   which
valuation results from a proceeding initiated under the United States 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).

     Deleted   Mortgage   Loan: A Mortgage   Loan   repurchased   by a Mortgage   Loan
Seller or the Sponsor and removed from the Trust Fund.

     Denomination: With respect to each Certificate, the amount set forth on the
face   thereof   as the   "Initial   Certificate   Balance of this   Certificate"   (or
initial notional balance,   in the case of the Interest Only Certificates) or the
Percentage Interest appearing on the face thereof.

     Depositor:   HSI Asset Securitization   Corporation,   a Delaware corporation,
and its successors in interest.

     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   Institution:   Any   depository   institution   or   trust   company,
including the Trustee and the Securities Administrator, that (a) is incorporated
under the laws of the   United   States of America   or any State   thereof,   (b) is
subject to supervision and   examination by federal or state banking   authorities
and (c) has outstanding unsecured commercial paper or other short-term unsecured
debt obligations that are rated P-1 by Moody's, F1+ by Fitch and A-1 by Standard
& Poor's.

     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.

     Designated   Rates:   For Subgroup I-1,   6.0%,   for Subgroup I-2,   7.0%,   for
Subgroup I-3, 7.5%, for Subgroup I-4, 8.0% and for Subgroup II-1, 5.5%.

                                      -20-


<PAGE>


     Determination   Date:   For each   Remittance   Date (i) with   respect to Wells
Fargo Bank, as Servicer, and Countrywide Servicing, the Business Day immediately
preceding such Remittance   Date, (ii) with respect to Wachovia,   the 15th day of
the calendar month in which such Remittance Date occurs, or if that day is not a
Business Day, the immediately   succeeding business day and (iii) with respect to
HSBC Mortgage,   the 16th day of the calendar month in which such Remittance Date
occurs,   or if   that   day is not a   Business   Day,   the   immediately   succeeding
Business Day.

     Discount Fraction:   With respect to each Discount Mortgage Loan (a) in Loan
Group I, a fraction,   expressed as a percentage, the numerator of which is 6.00%
minus the Net Mortgage Rate for such Discount   Mortgage Loan in Loan Group I and
the   denominator   of which   is   6.00%   and (b) in Loan   Group   II,   a   fraction,
expressed   as a   percentage,   the   numerator   of which is   5.50%   minus   the Net
Mortgage   Rate   for   such   Discount   Mortgage   Loan   in   Loan   Group   II and the
denominator of which is 5.50%.

     Discount   Mortgage Loan: With respect to Loan Group I, any Mortgage Loan in
Loan   Group I with a Net   Mortgage   Rate less than   6.00%   per   annum,   and with
respect to Loan Group II, any Mortgage Loan in Loan Group II with a Net Mortgage
Rate less than 5.50% per annum.

     Disqualified   Non-U.S.   Person: With respect to a Class R Certificate,   any
Non-U.S. Person or agent thereof other than (i) a Non-U.S. Person that holds the
Class R Certificate in connection with the conduct of a trade or business within
the   United   States   and   has   furnished   the    transferor   and   the   Securities
Administrator   with an effective IRS Form W-8ECI or (ii) a Non-U.S.   Person that
has delivered to both the transferor and the Securities Administrator an opinion
of a   nationally   recognized   tax counsel to the effect   that the   transfer of a
Class R Certificate to it is in accordance with the requirements of the Code and
the   regulations   promulgated   thereunder   and that such   transfer   of a Class R
Certificate will not be disregarded for federal income tax purposes.

     Distribution   Account: The separate Eligible Account created and maintained
by the Securities   Administrator   pursuant to Section 3.01(c) in the name of the
Securities   Administrator as paying agent for the benefit of the Trustee and the
Certificateholders   and designated "Citibank,   N.A. as paying agent in trust for
registered    holders   of   HSI   Asset   Loan   Obligation    Trust   2006-2   Mortgage
Pass-Through   Certificates,   Series 2006-2".   Funds in the Distribution   Account
shall be held in trust for the   Certificateholders for the uses and purposes set
forth in this Agreement.

     Distribution   Date: The 25th day of each calendar   month, or if such day is
not a Business Day, the next   succeeding   Business   Day,   commencing in January,
2007.

     Document Certification and Exception Report: The form of report attached to
Exhibit F hereto.

     Due Date: For a Mortgage   Loan, the date specified in the related   Mortgage
Note on which the   monthly   scheduled   payment of   interest   and   principal   (or
interest only during the   applicable   interest-only   period,   if any,   following
origination) is due.

                                      -21-


<PAGE>


     Due Period: With respect to any Distribution Date, the period commencing on
the   second   day of the   calendar   month   preceding   the   month   in   which   such
Distribution   Date occurs and ending on the first day of the   calendar   month in
which such Distribution Date occurs.

     EDGAR: The Commission's Electronic Data Gathering and Retrieval System.

     Eligible   Account:   Either   (i) an   account   maintained   with a federal   or
state-chartered   depository   institution or trust company that complies with the
definition   of   Eligible   Institution,   (ii)   an   account   maintained   with   the
corporate    trust    department    of   a    federal    depository    institution    or
state-chartered    depository    institution   subject   to   regulations    regarding
fiduciary   funds on   deposit   similar   to Title 12 of the U.S.   Code of   Federal
Regulation   Section   9.10(b),   which, in either case, has corporate trust powers
and is acting in its fiduciary capacity or (iii) 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
Securities Administrator.

     Eligible Funds:   With respect to any Distribution Date and each Loan Group,
the portion,   if any, of the Available Funds for such Loan Group remaining after
reduction by the sum of the related   Senior   Principal   Distribution   Amount (in
each case determined   without regard to Section   4.02(a)(iii)(E)),   the Class PO
Principal   Distribution   Amount (determined   without regard to clause (v) of its
definition),   the Senior Interest   Distribution Amount, and the aggregate amount
of Accrued Certificate   Interest on the Senior Subordinate   Certificates,   Class
B-4 and Class B-5 Certificates.

     Eligible Institution:   A federal or state-chartered   depository institution
or trust company the commercial   paper,   short-term debt   obligations,   or other
short-term   deposits of which are rated at least   "A-1+" by Standard & Poor's if
the   amounts on deposit   are to be held in the account for no more than 365 days
(or at least   "A-2" if the   amounts on deposit are to be held in the account for
no more   than 30 days),   "P-1" by   Moody's   and "F1+" by Fitch (or a   comparable
rating if another   Rating Agency is specified by the Depositor by written notice
to   each   of the   Servicers   and   the   Securities   Administrator)   or   long-term
unsecured debt   obligations are rated at least "AA-" by Standard & Poor's if the
amounts on deposit are to be held in the account for no more than 365 days.

     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 Prohibited
Transaction   Exemption   ("PTE") 96-84, 61 Fed. Reg. 58234 (1996),   as amended by
PTE 97-34, 62 Fed. Reg. 39021 (1997), PTE 2000-58, 65 Fed. Reg. 67765 (2000) and
PTE 2002-41,   67 Fed.   Reg.   54487   (2002) (or any   successor   thereto),   or any
substantially similar administrative exemption granted by the U.S. Department of
Labor.

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

     Escrow Account: With respect to each Servicer, the meaning assigned to such
term in the related Servicing Agreement.

                                       -21-


<PAGE>


     Event of Default:   With respect to each Servicer,   the meaning   assigned to
such term in the related Servicing Agreement.

     Excess Bankruptcy Losses: Bankruptcy Losses on the Mortgage Loans in excess
of the Bankruptcy Amount.

      Excess Fraud   Losses:   Fraud Losses on the Mortgage   Loans in excess of the
Fraud Loss Amount.

     Excess Special   Hazard Losses:   Special Hazard Losses on the Mortgage Loans
in excess of the Special Hazard Amount.

     Excess Subordinate   Principal Amount: With respect to any Distribution Date
on which the Class Certificate   Balance of Class or Classes of Certificates then
outstanding   with the   Lowest   Priority   is to be   reduced   to zero and on which
Realized Losses on the Mortgage Loans are to be allocated to that Class or those
Classes,   the amount,   if any, by which (i) the amount of   principal   that would
otherwise be   distributable   on that Class or those Classes of   Certificates   on
that Distribution Date is greater than (ii) the excess, if any, of the aggregate
Class   Certificate   Balance   of that   Class or   those   Classes   of   Certificates
immediately   prior to that   Distribution   Date   over   the   aggregate   amount   of
Realized   Losses to be allocated to that Class or those Classes of   Certificates
on that   Distribution   Date,   as reduced by any amount   calculated   pursuant   to
clause (v) of the definition of "Class PO Distribution Amount."

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

     Expense   Fees:   As to each Mortgage   Loan and any   Distribution   Date,   the
Servicing Fees.

     Extraordinary   Loss: A Realized Loss   resulting   from damage to a Mortgaged
Property that was occasioned by war, civil   insurrection,   certain   governmental
actions, nuclear reaction and certain other risks.

     Fannie Mae: The Federal   National   Mortgage   Association,   or any successor
thereto.

     Final Recovery   Determination:   With respect to any defaulted Mortgage Loan
or any REO Property (other than a Mortgage Loan or REO Property purchased by the
Mortgage   Loan   Seller or the Sponsor as   contemplated   by this   Agreement,   any
Transfer Agreement or the Purchase   Agreement,   as applicable),   a determination
made   by any   Servicer   that   all   Insurance   Proceeds,   Condemnation   Proceeds,
Liquidation Proceeds and other payments or recoveries which the Servicer, in its
reasonable   good faith   judgment,   expects to be finally   recoverable in respect
thereof have been so recovered.

     Fitch:   Fitch, Inc., or any successor thereto.   If Fitch is designated as a
Rating Agency in the   Preliminary   Statement,   for purposes of Section 12.05 the
address for notices to Fitch shall be Fitch,   Inc., One State Street Plaza,   New
York, New York 10004, Attention:

                                      -22-


<PAGE>


MBS Monitoring - HALO (HSI Asset Loan   Obligation   Trust 2006-2),   or such other
address as Fitch may   hereafter   furnish   to the   Depositor   and the   Securities
Administrator.

     Form 8-K Disclosure Information: As defined in Section 8.12(a)(iii).

     Fraud Loss Amount:   As of the Closing Date, an amount equal to 2.00% of the
Stated Principal   Balance of the Mortgage Loans as of the Cut-off Date,   subject
to reduction   from time to time, by the amount of Fraud Losses   allocated to the
Certificates in accordance with Section 4.04. In addition,   on each   anniversary
of the Cut-off   Date,   the Fraud Loss Amount will be reduced as follows:   (a) on
the first,   second,   third and fourth   anniversaries   of the Cut-off Date, to an
amount   equal   to the   lesser   of (i) 2% of the   then-current   Stated   Principal
Balance of the Mortgage Loans in the case of the first such   anniversary   and 1%
of the then-current   Stated Principal   Balance of the Mortgage Loans in the case
of the second,   third and fourth such   anniversaries   and (ii) the excess of the
Fraud Loss Amount as of the preceding   anniversary   of the Cut-off Date over the
cumulative   amount of Fraud Losses   allocated to the   Certificates in accordance
with   Section   4.04   since   such   preceding   anniversary;   and (b) on the   fifth
anniversary of the Cut-off Date, to zero.

     Fraud Losses:   A Realized Loss incurred on defaulted   Mortgage   Loans as to
which there was a fraud in the origination of such Mortgage Loan.

     Freddie   Mac:   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 thereto.

     Group 1 Certificates: As specified in the Preliminary Statement.

     Group I Mortgage Loans:   The Mortgage Loans identified on the Mortgage Loan
Schedule as Group I Mortgage Loans.

     Group 2 Certificates: As specified in the Preliminary Statement.

     Group II Mortgage Loans: The Mortgage Loans identified on the Mortgage Loan
Schedule as Group II Mortgage Loans.

     Group    Subordinate    Amount:    With   respect   to   each   Subgroup   and   any
Distribution   Date, the excess of the sum of the Subgroup Fraction of the Stated
Principal   Balance for all Mortgage Loans included in such Subgroup   (other than
the Discount   Fraction of any Discount   Mortgage Loan) immediately prior to such
Distribution   Date   over the   total   Class   Certificate   Balance   of the   Senior
Certificates   (other than any Class PO Certificates) of the related   Certificate
Group immediately prior to that Distribution Date.

     Highest   Priority:    As   of   any   date   of   determination,    the   Class   of
Certificates then outstanding with a Certificate Balance greater than zero, with
the earliest priority for payments pursuant to Section 4.02(a), in the following
order:   Senior   Certificates,   Class B-1, Class B-2, Class B-3, Class B-4, Class
B-5 and Class B-6 Certificates.

     HSBC Mortgage: HSBC Mortgage Corporation (USA).

                                      -23-


<PAGE>


     Independent:   When used with   respect to any   accountants,   a Person who is
"independent" within the meaning of Rule 2-01(B) of the Commission's   Regulation
S-X. Independent means, when used with respect to any other Person, a Person who
(A) is in fact independent of another specified Person and any Affiliate of such
other   Person,   (B) does not have any   material   direct   or   indirect   financial
interest in such other Person or any Affiliate of such other Person,   (C) is not
connected   with such other   Person or any   Affiliate   of such other Person as an
officer, employee, promoter,   underwriter,   trustee, partner, director or Person
performing   similar functions and (D) is not a member of the immediate family of
a Person defined in clause (B) or (C) above.

     Initial   Certificate   Balance:   With respect to each Class of Certificates,
the Certificate Balance of such Class of Certificates as of the Cut-off Date, in
the amount set forth in the Preliminary Statement.

     Initial Certification: As defined in Section 2.02.

     Initial   Subordinate   Class   Percentage:   With   respect   to each   Class   of
Subordinate   Certificates,   an amount   which is equal to the   initial   aggregate
Certificate   Balance of such Class of   Subordinate   Certificates   divided by the
aggregate Stated   Principal   Balance of all the Mortgage Loans as of the Cut-off
Date as follows:

<TABLE>
    <S>                            <C>               <C>
    ---------------------------   ---------------   ---------------------
    Class B-1:   2.35%                              Class B-4:   0.60%
    ---------------------------   ---------------   ---------------------
    Class B-2:   1.00%                              Class B-5:   0.50%
    ---------------------------   ---------------   ---------------------
    Class B-3:   0.60%                              Class B-6:   0.20%
    ---------------------------   ---------------   ---------------------
</TABLE>

     Insurance   Policy:   With respect to any Mortgage Loan included in the Trust
Fund, any insurance policy,   including,   but not limited to, any standard hazard
insurance policy,   flood insurance policy,   earthquake   insurance policy,   title
insurance   policy or Primary Mortgage   Insurance Policy (if any),   including all
riders and endorsements   thereto in effect,   including any replacement policy or
policies.

     Insurance   Proceeds:   With   respect   to each   Mortgage   Loan,   proceeds   of
Insurance Policies insuring the Mortgage Loan or the related Mortgaged Property.

     Interest   Accrual Period:   For each Class of   Certificates   (other than the
Adjustable   Rate   Certificates)   and any   Distribution   Date, the calendar month
immediately   preceding the month in which the related   Distribution Date occurs,
assuming a 360-day year consisting of twelve 30-day months. The Interest Accrual
Period for the Adjustable   Rate   Certificates   will be the actual number of days
elapsed during the period commencing on the immediately   preceding   Distribution
Date (or, for the initial Distribution Date, the Closing Date) and ending on the
day immediately   preceding the current Distribution Date assuming a 360-day year
consisting of twelve 30-day months.

     Interest Only Certificates: As specified in the Preliminary Statement.

                                       -24-


<PAGE>


     Interest Transfer Amount: With respect to any Undercollateralized Group and
any Distribution Date, one month's interest on the applicable Principal Transfer
Amount at the Designated   Rate for the related   Subgroup,   plus any shortfall of
interest on the Senior Certificates of the applicable   Undercollateralized Group
from prior Distribution Dates.

     IRS: The Internal Revenue Service.

     Junior Subordinate Certificates: As specified in the Preliminary Statement.

     Late Collections: With respect to any Mortgage Loan and any Due Period, all
amounts received after the   Determination   Date   immediately   following such Due
Period, whether as late payments of Scheduled Payments or as Insurance Proceeds,
Condemnation Proceeds, Liquidation Proceeds, Subsequent Recoveries or otherwise,
which   represent late payments or collections of principal   and/or   interest due
(without regard to any   acceleration of payments under the related   Mortgage and
Mortgage Note) but delinquent for such Due Period and not previously recovered.

     LIBOR:   With respect to any Interest Accrual Period for the Adjustable Rate
Certificates,   the per annum rate determined on the LIBOR   Determination Date in
the   following   manner   by the   Securities   Administrator   on the   basis   of the
"Interest   Settlement Rate" set by the British Bankers'   Association (the "BBA")
for   one-month   United   States   dollar   deposits,   as such   rates   appear on the
Telerate Page 3750, as of 11:00 a.m.   (London time) on such LIBOR   Determination
Date.

     If on such a LIBOR   Determination   Date, the BBA's Interest Settlement Rate
does not appear on the Telerate Page 3750 as of 11:00 a.m.   (London time), or if
the   Telerate   Page   3750   is   not   available   on   such   date,    the   Securities
Administrator   will obtain such rate from   Reuters'   "page LIBOR 01" or, if such
rate does not appear therein, the Securities Administrator will obtain such rate
from   Bloomberg's   page   "BBAM."   If such rate is not   published   for such LIBOR
Determination   Date,   LIBOR for such date   will be the most   recently   published
Interest   Settlement   Rate. In the event that the BBA no longer sets an Interest
Settlement   Rate,   the   Securities   Administrator   will designate an alternative
index   that has   performed,   or that the   Securities   Administrator   expects   to
perform,   in a manner   substantially   similar to the BBA's   Interest   Settlement
Rate.   The   Securities   Administrator   will   select   a   particular   index as the
alternative index only if it receives an Opinion of Counsel, which opinion shall
be an expense reimbursed from the Distribution Account pursuant to Section 4.01,
that the   selection of such index will not cause any of the REMICs to lose their
classification as REMICs for federal income tax purposes.

     LIBOR   Determination   Date: With respect to any Interest Accrual Period for
the Adjustable Rate   Certificates,   the second London Business Day preceding the
commencement of such Interest Accrual Period.

     Liquidated   Mortgage   Loan:   With   respect   to   any   Distribution   Date,   a
defaulted Mortgage Loan (including any REO Property) which was liquidated in the
calendar month preceding the month of such Distribution Date and as to which the
applicable   Servicer has certified to the Securities   Administrator   that it has
received all amounts it expects to receive in

                                      -25-


<PAGE>


connection   with the   liquidation   of such   Mortgage   Loan   including   the final
disposition of an REO Property.

     Liquidation Proceeds: Cash received in connection with the liquidation of a
Liquidated Mortgage Loan, whether through a trustee's sale,   foreclosure sale or
otherwise.

     Loan Group:   The Group I Mortgage Loans or the Group II Mortgage   Loans, as
applicable.

     Loan Group I: The group of Mortgage Loans comprised of the Group I Mortgage
Loans.

     Loan   Group   II:   The group of   Mortgage   Loans   comprised   of the Group II
Mortgage Loans.

     London Business Day: Any day on which dealings in deposits of United States
dollars are transacted in the London interbank market.

     Lower   Priority:   As   of   any   date   of   determination   and   any   Class   of
Certificates,    any   other   Class   of   Certificates    then   outstanding   with   a
Certificate Balance greater than zero, with later priority for payments pursuant
to Section 4.02(a).

     Lowest Priority: As of any date of determination, the Class of Certificates
then   outstanding   with the latest   priority   for   payments   pursuant to Section
4.02(a),   in the following   order:   Senior   Certificates,   Class B-6, Class B-5,
Class B-4, Class B-3, Class B-2 and Class B-1 Certificates.

     Master Servicer:   CitiMortgage, Inc., and any successor in interest, and if
a successor master servicer is appointed hereunder, such successor.

     Master Servicer Event of Default: As defined in Section 9.06.

     Master Servicer Float Period:   With respect to each   Distribution   Date and
the related amounts in the Master Servicing   Account,   the period   commencing on
the applicable Remittance Date immediately preceding the related Master Servicer
Remittance Date and ending on such Master Servicer Remittance Date.

     Master Servicer   Remittance Date: As to any   Distribution   Date, 12:00 noon
New   York   City   time on the   first   Business   Day   immediately   preceding   such
Distribution Date.

     Master   Servicing   Account:   The   separate   Eligible   Account   created   and
maintained by the Master Servicer pursuant to Section 3.01(c) in the name of the
Master   Servicer for the benefit of the Trustee and the   Certificateholders   and
designated   "CitiMortgage,   Inc., in trust for   registered   holders of HSI Asset
Loan Obligation Trust 2006-2 Mortgage Pass-Through Certificates, Series 2006-2".
Funds   in   the   Master   Servicing   Account   shall   be   held   in   trust   for   the
Certificateholders for the uses and purposes set forth in this Agreement.

                                       -26-


<PAGE>

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

     MERS:   Mortgage    Electronic    Registration    Systems,    Inc.,   a   Delaware
corporation, and its successors in interest.

     MERS   Designated   Mortgage   Loan: Any Mortgage Loan as to which the related
Mortgage, or an Assignment of Mortgage, has been or will be recorded in the name
of MERS, as nominee for the holder from time to time of the Mortgage Note.

     MERS Procedure   Manual:   The MERS Procedures   Manual, as it may be amended,
supplemented or otherwise modified from time to time.

     MERS(R)   System:    MERS   mortgage    electronic   registry   system,   as   more
particularly described in the MERS Procedures Manual.

     MIN: The Mortgage   Identification   Number of Mortgage Loans registered with
MERS on the MERS(R) System.

     Monthly Statement:   The statement made available to the   Certificateholders
by the Securities Administrator through its website pursuant to Section 4.03.

     Moody's:   Moody's   Investors   Service,   Inc. If Moody's is   designated as a
Rating Agency in the Preliminary Statement, for purposes of Section 13.05(c) the
address for notices to Moody's   shall be Moody's   Investors   Service,   Inc.,   99
Church   Street,   New   York,   New York   10007,   Attention:   Residential   Mortgage
Pass-Through   Group,   HALO (HSI Asset Loan Obligation   Trust Series 2006-2),   or
such other   address as Moody's may   hereafter   furnish to the   Depositor and the
Securities Administrator.

     Mortgage: The mortgage, deed of trust or other instrument identified on the
Mortgage Loan Schedule as securing a Mortgage Note.

     Mortgage File: The items pertaining to a particular Mortgage Loan contained
in either the Servicing File or Custodial File.

     Mortgage   Loan:   An   individual   Mortgage   Loan that is the subject of this
Agreement,   each Mortgage   Loan   originally   sold and subject to this   Agreement
being   identified on the Mortgage Loan   Schedule,   which Mortgage Loan includes,
without   limitation,   the   Mortgage   File,   the   Scheduled   Payments,   Principal
Prepayments, Liquidation Proceeds, Subsequent Recoveries, Condemnation Proceeds,
Insurance Proceeds,   REO Disposition,   Prepayment Charges, and all other rights,
benefits,   proceeds   and   obligations   arising from or in   connection   with such
Mortgage Loan, excluding replaced or repurchased Mortgage Loans.

     Mortgage   Loan   Schedule:   A schedule   of   Mortgage   Loans   prepared by the
Depositor,   delivered   to the   Trustee on the   Closing   Date and   referred to on
Schedule I, such schedule   setting forth the Data Tape   Information with respect
to each Mortgage Loan.

                                       -27-


<PAGE>


     Mortgage Loan Sellers:   The entities   which sold the Mortgage   Loans to the
Sponsor pursuant to the Transfer Agreements.

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

     Mortgage   Rate:   With   respect to any   Mortgage   Loan,   the annual   rate of
interest borne by the related Mortgage Note from time to time, as of the related
Due Date.

     Mortgaged   Property:   With respect to each Mortgage Loan, the real property
(or leasehold estate, if applicable) identified on the Mortgage Loan Schedule as
securing repayment of the debt evidenced by the related Mortgage Note.

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

     NAS Prepayment Percentage:   With respect to any Distribution Date occurring
prior to the Distribution   Date in January 2012, 0%. For any   Distribution   Date
occurring on or after January 2012, a percentage determined as follows:

     (i)   for any   Distribution   Date on or   after   January   2012   and   prior to
          January 2013, 30%;

     (ii) for any   Distribution   Date on or   after   January   2013   and   prior to
          January 2014, 40%;

     (iii) for any   Distribution   Date on or after   January   2014   and   prior to
          January 2015, 60%;

     (iv) for any   Distribution   Date on or   after   January   2015   and   prior to
          January 2016, 80%;

          and

     (v)   for any Distribution Date after January 2016, 100%.

     Net Mortgage Rate: As to any Mortgage Loan and any   Distribution   Date, the
excess of the Mortgage   Rate over the sum of the   applicable   Servicing Fee Rate
and the rate at which any lender paid Primary Mortgage Insurance Policy premiums
are paid, if applicable.

     Non-Discount   Mortgage   Loan   means the   Mortgage   Loans in each Loan Group
other than the Discount Mortgage Loans included in that Loan Group.

     Non-Permitted Transferee: A Person other than a Permitted Transferee.

     Non-U.S. Person: A person that is not a U.S. Person.

     Nonrecoverable P&I Advance:   Any P&I Advance previously made or proposed to
be made in respect of a Mortgage   Loan or REO Property   that,   in the good faith
business   judgment   (taking into account   Accepted   Servicing   Practices) of the
applicable Servicer, the

                                      -28-


<PAGE>


Master   Servicer,   as   successor   servicer,   or any   successor   master   servicer
including the Trustee, as applicable, will not or, in the case of a proposed P&I
Advance,   would not be ultimately   recoverable   from related Late Collections on
such Mortgage Loan or REO Property as provided herein.

     Nonrecoverable Servicing Advance: Any Servicing Advances previously made or
proposed to be made in respect of a Mortgage   Loan or REO   Property,   which,   in
accordance   with   Accepted   Servicing   Practices,   will not or, in the case of a
proposed   Servicing   Advance,   would not be ultimately   recoverable from related
Late Collections.

     Notice of Final   Distribution:   The notice to be provided by the Securities
Administrator pursuant to Section 12.02 to the effect that final distribution on
any of the   Certificates   shall be made only   upon   presentation   and   surrender
thereof.

     Notional   Amount:   As of any   date of   determination   for the   Class   I-A-4
Certificates,   the Notional Amount is equal to the Class Certificate   Balance of
the Class I-A-3 Certificates.   For Class I-A-8 Certificates, the Notional Amount
is equal to the Class Certificate Balance of the Class I-A-7   Certificates.   For
the   Class   I-A-10   Certificates,   the   Notional   Amount   is equal to the   Class
Certificate   Balance   of the Class   I-A-9   Certificates.   For the   Class   I-A-12
Certificates,   the Notional Amount is equal to the Class Certificate   Balance of
the   Class   I-A-11   Certificates.    The   Notional   Amount   for   the   Class   I-IO
Certificates   and Class II-IO   Certificates   will equal the Class I-IO   Notional
Amount and the Class II-IO Notional Amount, respectively.

     Offered Certificates: As specified in the Preliminary Statement.

     Offering Documents: Collectively, the Prospectus, Prospectus Supplement and
the Private Placement Memorandum.

     Officer's Certificate: As defined in the applicable Servicing Agreement.

     Opinion of Counsel: A written opinion of counsel,   which may be in-house or
outside   counsel to the   Depositor,   the   Sponsor,   the Master   Servicer   or the
Trustee,   acceptable   to   the   Trustee   or   the   Securities   Administrator,    as
applicable, except that any opinion of counsel relating to (a) the qualification
of any   REMIC   created   hereunder   as a REMIC or (b)   compliance   with the REMIC
Provisions must be an opinion of Independent counsel.

     Option to Purchase:   On the initial or any subsequent Optional   Termination
Date, the Master Servicer,   at its own option may purchase,   or upon instruction
by the   Depositor,   shall   purchase   the Mortgage   Loans.   In the event that the
Depositor   wishes to instruct the Master Servicer to purchase the Mortgage Loans
on any Optional   Termination   Date, the Depositor shall provide   instructions to
the Master Servicer to exercise such option no later than 5 p.m. on the Business
Day   immediately   preceding   the Optional   Termination   Date, in which event the
exercise by the Master   Servicer of its option to purchase   the   Mortgage   Loans
shall be deemed to have been at the Depositor's instruction.

     Optional   Termination   Date: Any   Distribution   Date on which the aggregate
Stated   Principal   Balance   of the   Mortgage   Loans,   as of the   last day of the
related   Due Period,   is less than or equal to 10.00% of the   Cut-off   Date Pool
Principal Balance.

                                      -29-


<PAGE>


     OTS: Office of Thrift Supervision, and any successor thereto.

     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 Securities Administrator
     or delivered to the Securities Administrator for cancellation; and

          (ii)   Certificates   in   exchange   for which or in lieu of which   other
     Certificates    have   been    executed   and    delivered   by   the    Securities
     Administrator 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 such Due Date and which did not become a
Liquidated Mortgage Loan prior to such Due Date.

     Overcollateralized   Group:   On any   Distribution   Date,   when   there   is an
Undercollateralized   Group, any Certificate Group on such Distribution Date that
is not itself an Undercollateralized Group.

     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.

     P&I Advance: As to any Mortgage Loan or REO Property, any advance made by a
Servicer in respect of any   Remittance   Date   representing   the aggregate of all
payments of principal and interest,   net of the applicable Servicing Fee and any
lender paid Primary Mortgage Insurance Policy premiums, that were due during the
related Due Period on the Mortgage Loans and that were delinquent on the related
Determination   Date,   plus certain   amounts   representing   assumed   payments not
covered   by any   current   net income on the   Mortgaged   Properties   acquired   by
foreclosure or deed in lieu of foreclosure as determined pursuant to the related
Servicing Agreement.

     Pass-Through Rate: means:

     With   respect   to   the    Certificates    (other   than   the   Adjustable   Rate
Certificates, the Subordinate Certificates, the Class PO Certificates, the Class
P Certificates and the Class R Certificates), and any Distribution Date, the per
annum rates set forth in the Preliminary   Statement   hereto.   For the Adjustable
Rate Certificates and the Subordinate Certificates and any Distribution Date:

     (i)   With   respect   to the Class   I-A-3   Certificates   with   respect to the
          initial   Interest   Accrual   Period is 5.95% per   annum,   and as to any
           Interest Accrual Period thereafter,   will be a per annum rate equal to
          LIBOR plus   0.60%,   with a maximum   rate of the   applicable   Available
          Funds Cap and a minimum rate of 0.60% per annum;

                                      -30-


<PAGE>


     (ii) With   respect   to the Class   I-A-4   Certificates   with   respect to the
          initial   Interest   Accrual   Period is 0.05% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
           5.40%   minus   LIBOR,   with a   maximum   rate of 5.40%   per   annum and a
          minimum rate of 0.00% per annum;

    (iii) With   respect to the   Class   I-A-7   Certificates   with   respect to the
          initial   Interest   Accrual   Period is 5.72% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          LIBOR plus 0.37%,   with a maximum rate of the 7.00% and a minimum rate
          of 0.37% per annum;

     (iv) With   respect   to the Class   I-A-8   Certificates   with   respect to the
          initial   Interest   Accrual   Period is 1.28% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          6.63%   minus   LIBOR,   with a   maximum   rate of 6.63%   per   annum and a
          minimum rate of 0.00% per annum;

     (v)   With   respect   to the Class   I-A-9   Certificates   with   respect to the
          initial   Interest   Accrual   Period is 5.65% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          LIBOR plus 0.30%,   with a maximum   rate of 7.50% and a minimum rate of
          0.30% per annum;

     (vi) With   respect to the Class   I-A-10   Certificates   with   respect to the
           initial   Interest   Accrual   Period is 1.85% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          7.20%   minus   LIBOR,   with a   maximum   rate of 7.20%   per   annum and a
          minimum rate of 0.00% per annum;

    (vii) With   respect to the Class   I-A-11   Certificates   with respect to   the
          initial   Interest   Accrual   Period is 5.55% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          LIBOR plus 0.20%,   with a maximum   rate of 8.00% and a minimum rate of
          0.20% per annum;

   (viii) With   respect to the Class I-A-12   Certificates   with   respect   to the
          initial   Interest   Accrual   Period is 2.45% per   annum,   and as to any
          Interest Accrual Period thereafter,   will be a per annum rate equal to
          7.80%   minus   LIBOR,   with a   maximum   rate of 7.80%   per   annum and a
          minimum rate of 0.00% per annum;

     (ix) With   respect   to the Class   B-1   Certificate   and as to any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date minus 0.57687234%;

     (x)   With   respect   to the Class   B-2   Certificate   and as to any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date minus 0.32687234%;

                                      -31-


<PAGE>


     (xi) With   respect   to the Class   B-3   Certificate   and as to any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date;

    (xii) With   respect   to the Class B-4   Certificate   and as   to any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date;

   (xiii) With   respect to the Class B-5   Certificate   and   as to   any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date; and

    (xiv) With   respect   to the Class B-6   Certificate   and   as to any   Interest
          Accrual   Period,   will be a per annum rate equal to the   Subgroup   WAC
          Rate for such Distribution Date plus (((0.57687234%   multiplied by the
          Class   Certificate   Balance of the Class B-1 Certificates   immediately
          prior to such Distribution   Date) plus (0.32687234%   multiplied by the
          Class   Certificate   Balance of the Class B-2 Certificates   immediately
          prior to such   Distribution   Date))   divided by the Class   Certificate
          Balance   of the   Class   B-6   Certificates   immediately   prior   to such
          Distribution Date);

The Class PO Certificates, the Class P Certificates and the Class R Certificates
have no Pass-Through Rates and are not entitled to Accrued Certificate Interest.

     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.

     Permitted   Investments:   Any one or more of the   following   obligations   or
securities   acquired at a purchase price of not greater than par,   regardless of
whether   issued by the   Securities   Administrator,   the   Trustee or any of their
respective Affiliates:

          (i) direct   obligations   of, or   obligations   fully   guaranteed   as to
     timely   payment of   principal   and   interest   by, the United   States or any
     agency or instrumentality thereof,   provided such obligations are backed by
     the full faith and credit of the United States;

          (ii)   demand and time   deposits   in,   certificates   of deposit   of, or
     bankers'   acceptances   (which   shall each have an original   maturity of not
      more than 90 days and,   in the case of   bankers'   acceptances,   shall in no
     event   have an   original   maturity   of more   than 365   days or a   remaining
     maturity of more than 30 days)   denominated   in United   States   dollars and
     issued   by,   any   Depository   Institution   and rated F1+ by Fitch,   A-1+ by
     Standard & Poor's and P-1 by Moody's;

          (iii) repurchase obligations with respect to any security described in
     clause (i) above   entered   into with a   Depository   Institution   (acting as
     principal);

                                       -32-


<PAGE>


          (iv) securities bearing interest or sold at a discount that are issued
     by any   corporation   incorporated   under the laws of the   United   States of
     America   or any state   thereof   and that are rated by   Fitch,   Moody's   and
     Standard & Poor's   (in each case,   to the   extent   they are   designated   as
     Rating   Agencies in the   Preliminary   Statement),   and by each other Rating
     Agency   that rates such   securities,   in its   highest   long-term   unsecured
     rating categories at the time of such investment or contractual   commitment
     providing for such investment;

          (v) commercial   paper   (including both   non-interest-bearing   discount
     obligations   and   interest-bearing   obligations   payable   on demand or on a
     specified date not more than 30 days after the date of acquisition thereof)
     that is rated by Fitch, Moody's and Standard & Poor's (in each case, to the
     extent   they   are   designated   as   Rating    Agencies   in   the    Preliminary
     Statement),   and by each other Rating Agency that rates such securities, in
     its highest short-term   unsecured debt rating available at the time of such
     investment;

           (vi) units of money market funds, including money market funds managed
     by the Trustee, the Securities   Administrator or an Affiliate thereof, that
     have been rated "Aaa" by Moody's,   "AAA" by Standard & Poor's and, if rated
     by Fitch, "AAA" by Fitch; and

          (vii)   if    previously    confirmed    in   writing   to   the    Securities
     Administrator, any other demand, money market or time deposit, or any other
     obligation,   security or   investment,   as may be   acceptable to each of the
     Rating   Agencies as a permitted   investment of funds backing "Aaa" or "AAA"
     rated securities; provided, however, that no instrument described hereunder
     shall   evidence   either the right to receive (a) only interest with respect
     to the   obligations   underlying   such   instrument or (b) both principal and
     interest   payments derived from obligations   underlying such instrument and
     the interest and principal payments with respect to such instrument provide
     a yield to maturity at par greater than 120.00% of the yield to maturity at
     par of the underlying obligations.

     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) a   Person   that   is a
Disqualified Non-U.S. Person or a U.S. Person with respect to whom income from a
Residual   Certificate is attributable to a foreign   permanent   establishment   or
fixed base,   within the   meaning of an   applicable   income tax   treaty,   of such
Person or any other U.S. Person, (vi) an "electing large partnership" within the
meaning of Section 775 of the Code 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   formed
hereby   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

                                      -33-


<PAGE>


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 Freddie Mac, 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.

     Prepayment   Assumption:   With respect to the Mortgage   Loans,   a prepayment
assumption   of 24% CPR,   used for   determining   the   accrual of   original   issue
discount and market discount and premium on the   Certificates for federal income
tax purposes.

     Prepayment Charge: Any prepayment premium, penalty or charge collected by a
Servicer with respect to a Mortgage Loan from a Mortgagor in connection with any
Principal Prepayment pursuant to the terms of the related Mortgage Note.

     Prepayment Distribution   Percentage:   With respect to any Distribution Date
and each   Class of   Subordinate   Certificates   for each   Loan   Group,   under the
applicable   circumstances set forth below, the respective   percentages set forth
below:

          (i)   For any   Distribution   Date   prior   to the   Distribution   Date in
     January   2012   (unless   the   Certificate   Balances   of the   related   Senior
     Certificates   other   than the Class PO   Certificates   have been   reduced to
     zero), 0%.

          (ii) For any   Distribution   Date for which   clause   (i) above does not
     apply,   and on which any Class of Subordinate   Certificates   is outstanding
     with a Certificate Balance greater than zero:

               (a) in the case of the   Class of   Subordinate   Certificates   then
          outstanding   with   the   Highest   Priority   and   each   other   Class   of
          Subordinate Certificates for which the related Prepayment Distribution
           Trigger has been satisfied, a fraction, expressed as a percentage, the
          numerator   of   which   is the   Certificate   Balance   of such   Class   of
          Subordinate   Certificates   then   outstanding with the Highest Priority
          immediately prior to such date and the denominator of which is the sum
          of the Certificate   Balances immediately prior to such date of (1) the
          Class of Subordinate   Certificates   then   outstanding with the Highest
          Priority and (2) all other   Classes of   Subordinate   Certificates   for
          which   the   respective   Prepayment   Distribution   Triggers   have   been
          satisfied; and

               (b) in the case of each other Class of   Subordinate   Certificates
          for   which   the   Prepayment    Distribution    Triggers   have   not   been
          satisfied, 0%.

          (iii)   Notwithstanding   the   foregoing,   if   the   application   of   the
     foregoing   percentages on any Distribution Date (determined   without regard
     to the proviso to the   definition of   "Subordinate   Principal   Distribution
     Amount")   would   result in a   distribution   as provided in Section   4.02 in
     respect of principal of any Class or Classes of Subordinate Certificates in
     an amount greater than the remaining Certificate Balance thereof (any such

                                      -34-


<PAGE>


     class,   a   "Maturing   Class"),    then:   (a)   the   Prepayment    Distribution
     Percentage   of each Maturing   Class shall be reduced to a level that,   when
     applied as described above, would exactly reduce the Certificate Balance of
     such Class to zero;   (b) the   Prepayment   Distribution   Percentage   of each
     other Class of Subordinate   Certificates   (any such Class, a   "Non-Maturing
     Class")   shall   be   recalculated   in   accordance   with   the   provisions   in
     paragraph (ii) above, as if the Certificate   Balance of each Maturing Class
     had   been   reduced   to   zero   (such    percentage    as    recalculated,    the
     "Recalculated   Percentage");   (c) the total amount of the reductions in the
     Prepayment   Distribution   Percentages   of the   Maturing   Class   or   Classes
     pursuant   to   clause   (a)   of   this   sentence,   expressed   as an   aggregate
     percentage, shall be allocated among the Non-Maturing Classes in proportion
     to their respective Recalculated Percentages (the portion of such aggregate
     reduction   so   allocated   to   any    Non-Maturing    Class,   the   "Adjustment
     Percentage");    and   (d)   for   purposes   of   such   Distribution   Date,   the
     Prepayment   Distribution   Percentage   of each   Non-Maturing   Class shall be
     equal to the sum of (1) the   Prepayment   Distribution   Percentage   thereof,
     calculated in accordance   with the provisions in paragraph (ii) above as if
     the   Certificate   Balance of each   Maturing   Class had not been   reduced to
     zero, plus (2) the related Adjustment Percentage.

     Prepayment   Distribution Trigger: With respect to any Distribution Date and
any Class of Subordinate Certificates (other than the Class B-1 Certificates), a
test that shall be satisfied if the fraction   (expressed as a percentage)   equal
to the   sum of the   Certificate   Balances   of   such   Class   and   each   Class   of
Subordinate Certificates with a Lower Priority than such Class immediately prior
to such   Distribution   Date divided by the aggregate Stated Principal Balance of
all of the Mortgage Loans (or related REO Properties)   immediately prior to such
Distribution   Date is greater   than or equal to the sum of the   related   Initial
Subordinate Class Percentages of such Classes of Subordinate Certificates.

     Prepayment   Interest   Excess:   With respect to any   Distribution   Date, any
interest   collected by Wells Fargo with respect to any related   Mortgage Loan as
to which a   Principal   Payment   in Full   occurs   from   the 1st day of the   month
through the 13th day of the month in which the Distribution Date occurs and that
represents   interest   that accrues from the 1st day of such month to the date of
such Principal Prepayment in Full.

     Prepayment Interest Shortfall:   With respect to each Servicer,   the meaning
assigned to such term in the related Servicing Agreement for each Loan Group.

     Prepayment Period:   With respect to each Servicer,   the meaning assigned to
such term (or to the term   "Principal   Prepayment   Period" with respect to Wells
Fargo) in the related Servicing Agreement.

     Primary Mortgage Insurance Policy: Any mortgage guaranty insurance, if any,
on an individual Mortgage Loan as evidenced by a policy or certificate,   whether
such policy is obtained by the related   Mortgage Loan Seller,   the lender or the
borrower.

     Principal   Prepayment:   Any full or partial   payment or other   recovery   of
principal on a Mortgage Loan   (including   upon   liquidation   of a Mortgage Loan)
that is received in advance of its scheduled Due Date,   excluding any Prepayment
Charge thereon, and that is not

                                      -35-


<PAGE>


accompanied by an amount of interest representing   scheduled interest due on any
date or dates in any month or months subsequent to the month of prepayment.

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

     Principal   Transfer Amount:   With respect to any Distribution   Date and any
Undercollateralized Group, the excess of the aggregate Class Principal Amount of
the Senior Certificates   (other than the Class PO Certificates)   related to that
Subgroup over the Subgroup Fraction of the aggregate Stated Principal Balance of
the   Mortgage   Loans   related   to   that   Undercollateralized    Group   (less   the
applicable Discount Fraction of any Discount Mortgage Loan in that Subgroup).

     Private Certificate: As specified in the Preliminary Statement.

     Private   Placement   Memorandum:   The Private   Placement   Memorandum,   dated
December   28,   2006    relating   to   the   offering   of   the   Junior    Subordinate
Certificates.

     Prospectus: The Prospectus, dated December 27, 2006, as supplemented by the
Prospectus Supplement.

     Prospectus Supplement:   The Prospectus Supplement,   dated December 27, 2006
relating to the Offered Certificates.

     PTCE: As defined in Section 5.02(b).

     Purchase   Agreement:   The Mortgage   Loan   Purchase   Agreement,   dated as of
December 1, 2006, between the Depositor and the Sponsor.

     Rating Agency:   Each of the Rating   Agencies   specified in the   Preliminary
Statement.   If such   organization   or a   successor   is no longer   in   existence,
"Rating   Agency"   shall   be   such   nationally    recognized    statistical   rating
organization,   or other   comparable   Person,   as is designated by the Depositor,
notice of which   designation   shall be given to the Trustee   and the   Securities
Administrator.   References   herein to a given   rating or   rating   category   of a
Rating   Agency   shall mean such rating   category   without   giving   effect to any
modifiers.   For purposes of Section   13.05,   the   addresses   for notices to each
Rating   Agency   shall   be the   address   specified   therefor   in   the   definition
corresponding to the name of such Rating Agency, or such other address as either
such Rating   Agency may hereafter   furnish to the   Depositor and the   Securities
Administrator.

     Realized   Losses:   With   respect   to any   date   of   determination   and   any
Liquidated   Mortgage Loan, the amount, if any, by which (a) the unpaid principal
balance of such   Liquidated   Mortgage   Loan   together   with   accrued   and unpaid
interest   thereon exceeds (b) the Liquidation   Proceeds with respect thereto net
of the   expenses   incurred by the   applicable   Servicer in   connection   with the
liquidation   of   such   Liquidated   Mortgage   Loan   and   net   of   the   amount   of
unreimbursed Servicing Advances with respect to such Liquidated Mortgage Loan.

                                      -36-


<PAGE>


     Record Date: means, with respect to the Offered Certificates,   the Business
Day   immediately   preceding the related   Distribution   Date,   unless the Offered
Certificates   are issued in definitive   form, in which case the Record Date will
be the   last   Business   Day of   the   month   immediately   preceding   the   related
Distribution Date.

     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.

     Regular Certificates: As specified in the Preliminary Statement.

     Relevant   Servicing   Criteria:   The   Servicing   Criteria   applicable to the
parties   having   reporting   obligations   hereunder,   as set   forth on   Exhibit S
attached   hereto.   For   clarification    purposes,    multiple   parties   can   have
responsibility   for the same Relevant   Servicing   Criteria.   With respect to any
Servicing Function   Participant   engaged by the Master Servicer,   the Securities
Administrator,   the   Custodian or any   Servicer,   the term   "Relevant   Servicing
Criteria" may refer to a portion of the Relevant Servicing   Criteria   applicable
to such parties.

     Relief Act: The   Servicemembers   Civil   Relief Act, as amended,   or similar
legislation or regulations as in effect from time to time.

     Relief Act Interest   Shortfall:   With respect to any Distribution   Date and
any Mortgage Loan,   any reduction in the amount of interest   collectible on such
Mortgage   Loan   for the most   recently   ended   Due   Period   as a   result   of the
application of the   Servicemembers   Civil Relief Act or any   applicable   similar
state statutes.

     REMIC: A "real estate   mortgage   investment   conduit" within the meaning of
Section 860D of the Code.   As used herein,   the term "the REMIC" or "the REMICs"
shall mean one or more of the REMICs created under this Agreement.

     REMIC 1: The   segregated   pool of   assets,   with   respect   to which a REMIC
election is made pursuant to this Agreement, consisting of:

     (a)   the   Mortgage   Loans and the   related   Mortgage   Files and   collateral
          securing such Mortgage Loans,

     (b)   all payments on and   collections   in respect of the Mortgage Loans due
          after   the Cut off   Date as   shall   be on   deposit   in any   Collection
          Account or in the Distribution   Account and identified as belonging to
          the Trust Fund,

     (c)   property   that secured a Mortgage   Loan and that has been acquired for
          the benefit of the   Certificateholders   by foreclosure or deed in lieu
          of foreclosure,

     (d)   the hazard insurance policies and Primary Insurance Policies,   if any,
          and

                                      -37-


<PAGE>


     (e)   all funds on deposit in the Class P Reserve Fund;

     (f)   all proceeds of clauses (a) through (e) above.

     REMIC 1   Interest:   The   REMIC   1   Regular   Interests   and   the   Class   R-I
Certificates.

     REMIC 1   Subordinated   Balance   Ratio:   The ratio among the   Uncertificated
Balances of each of the REMIC 1 Regular   Interests   ending with the   designation
"A,"   equal to the   ratio   among,   with   respect   to each   such   REMIC 1 Regular
Interest,   the   excess of (x) the   aggregate   Stated   Principal   Balance   of the
Mortgage Loans in the related Subgroup (other than the Discount   Fraction of the
Stated   Principal   Balance   of any   such   Mortgage   Loan)   over   (y)   the   Class
Certificate   Balance   of the   Senior   Certificates   (other   than   the   Class   PO
Certificates) in the related Subgroup.

     REMIC 2: The   segregated   pool of assets   consisting   of all of the REMIC 1
Regular   Interests,   with   respect to which a separate   REMIC   election is to be
made.

     REMIC 2 Certificate: Any Certificate, other than a Class R-I Certificate.

     REMIC 2 Regular   Certificate:   Any REMIC 2 Certificate,   other than a Class
R-2 Certificate.

     REMIC 3: The   segregated   pool of assets   consisting   of all of the REMIC 2
Regular   Interests,   with   respect to which a separate   REMIC   election is to be
made.

     REMIC 3 Certificate: Any Certificate, other than a Class R-2 Certificate.

     REMIC 3 Regular   Certificate:   Any REMIC 3 Certificate,   other than a Class
R-3 Certificate.

     REMIC 1 Regular   Interest:   Any of the   fifteen   separate   non-certificated
beneficial   ownership   interests in REMIC 1 issued hereunder and designated as a
"regular   interest"   in REMIC 1. Each   REMIC 1   Regular   Interest   shall   accrue
interest at the related REMIC 1 Remittance Rate in effect from time to time, and
shall be   entitled   to   distributions   of   principal,   subject   to the terms and
conditions   hereof,   in an aggregate amount equal to its initial   Uncertificated
Balance as set forth in the Preliminary   Statement hereto.   The designations for
the   respective   REMIC 1   Regular   Interests   are set   forth in the   Preliminary
Statement hereto.

     REMIC 1 Remittance Rate: As set forth in the Preliminary Statement.

     REMIC 2 Remittance Rate: As set forth in the Preliminary Statement.

     REMIC   2   Regular   Interest:   Any of   the   twenty   certificated   beneficial
ownership   interests in REMIC 2 issued hereunder,   and, hereby,   designated as a
"regular   interest"   in REMIC 2, as follows:   Class I-A-1,   Class   I-A-2,   Class
I-A-3, Class I-A-5,   Class I-A-6, Class I-A-7, Class I-A-9, Class I-A-11,   Class
I-IO, Class I-PO, Class II-A-1,   Class P, Class II-IO,   Class II-PO,   Class B-1,
Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6 Certificates.

                                      -38-


<PAGE>


     REMIC 3 Regular Interest:   Any of the twenty-four   certificated   beneficial
ownership   interests in REMIC 3 issued hereunder,   and, hereby,   designated as a
"regular   interest"   in REMIC 3, as follows:   Class I-A-1,   Class   I-A-2,   Class
I-A-3,   Class I-A-4,   Class I-A-5,   Class I-A-6, Class I-A-7, Class I-A-8, Class
I-A-9, Class I-A-10,   Class I-A-11,   Class I-A-12, Class I-IO, Class I-PO, Class
II-A-1,   Class II-IO,   Class II-PO,   Class P, Class B-1,   Class B-2,   Class B-3,
Class B-4, Class B-5 and Class B-6 Certificates.

     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.

     Remittance Date: With respect to each Servicer, the 18th day of each month.

     REO   Acquisition:   The acquisition by the applicable   Servicer on behalf of
the Trustee for the benefit of the Certificateholders of any REO Property.

     REO   Disposition:   The final   sale by the   applicable   Servicer   of any REO
Property.

     REO   Proceeds:   Proceeds,   net of expenses,   received in respect of any REO
Property (including, without limitation, proceeds from the rental of the related
Mortgaged   Property)   which   proceeds   are   required   to be   deposited   into the
applicable Collection Account upon the related REO Disposition.

     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: As defined in Section 8.12(a)(iii).

     Reporting Servicer: As defined in Section 8.12(a)(ii).

     Repurchase Price: With respect to any Mortgage Loan, an amount equal to the
sum of (i) the unpaid principal   balance of such Mortgage Loan as of the date of
repurchase, (ii) interest on such unpaid principal balance of such Mortgage Loan
at the Mortgage Rate from the last date through which   interest has been paid to
the date of repurchase,   (iii) all   unreimbursed   Servicing   Advances,   (iv) the
amount of any costs and   damages   incurred   by the Trust Fund as a result of any
violation    of   any    applicable    federal,    state   or   local    predatory-    or
abusive-lending   law arising from or in connection   with the origination of such
Mortgage   Loan   and   (v) all   expenses   incurred   by the   Master   Servicer,   the
Securities   Administrator,   the related   Servicer or Trustee   arising out of the
Master   Servicer's,   the related   Servicer's   or   Trustee's   enforcement   of the
applicable Mortgage Loan Seller's or Sponsor's repurchase obligation hereunder.

     Request for Release: The Request for Release submitted by a Servicer to the
Trustee, substantially in the form of Exhibit J.

     Residual Certificates: As specified in the Preliminary Statement.

                                      -39-


<PAGE>


     Reserve Fund:   The fund   established   by the   Securities   Administrator   on
behalf of the   Holders   of the Class   I-A-3   Certificates   pursuant   to   Section
3.01(a).

     Responsible Officer:   When used with respect to the Trustee, the Securities
Administrator   or the Master   Servicer,   any vice president,   any assistant vice
president,   any assistant secretary,   any assistant treasurer, any associate, or
any other officer of the Trustee,   the   Securities   Administrator   or the Master
Servicer   customarily   performing functions similar to those performed by any of
the above   designated   officers who at such time shall be officers 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 and who, in
each case,   shall have   direct   responsibility   for the   administration   of this
Agreement.

     Rule 144A Investment Letter: As defined in Section 5.02(b).

     Sarbanes-Oxley   Act:   The   Sarbanes-Oxley   Act of 2002   and the   rules   and
regulations    of   the    Commission    promulgated    thereunder    (including    any
interpretations thereof by the Commission's staff).

     Sarbanes-Oxley Certification:   A written certification signed by an officer
of the Master Servicer that complies with (i) the   Sarbanes-Oxley   Act, and (ii)
Exchange   Act Rules   13a-14(d)   and   15d-14(d),   as in effect from time to time;
provided that if, after the Closing Date (a) the   Sarbanes-Oxley Act is amended,
(b) the Rules   referred to in clause   (ii) are   modified   or   superseded   by any
subsequent statement, rule or regulation of the Commission or any statement of a
division   thereof,   or (c)   any   future   releases,   rules   and   regulations   are
published by the   Commission   from time to time   pursuant to the   Sarbanes-Oxley
Act,   which in any such   case   affects   the form or   substance   of the   required
certification and results in the required certification being, in the reasonable
judgment of the Master   Servicer,   materially more onerous that then form of the
required certification as of the Closing Date, the Sarbanes-Oxley   Certification
shall be as agreed to by the Master   Servicer,   and the   Depositor   following   a
negotiation in good faith to determine how to comply with any such requirements.

     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 herein, 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 and the rules and
regulations thereunder.

     Securities   Administrator:   Citibank,   N.A. and any successors in interest,
and   if a   successor   securities   administrator   is   appointed   hereunder,   such
successor.

     Securities   Administrator   Float Period:   With respect to the   Distribution
Date and the related amounts in the Distribution   Account, the period commencing
on the Remittance Date immediately   preceding such   Distribution Date and ending
on such Distribution Date.

                                      -40-


<PAGE>


     Senior Accelerated   Distribution Percentage means for each Subgroup and any
Distribution   Date   occurring   prior to the 60th   Distribution   Date   100%.   The
related Senior   Accelerated   Distribution   Percentage for any Distribution   Date
thereafter will be as follows:

          (i) for any Distribution   Date after the 60th Distribution Date but on
     or prior to the 72nd   Distribution   Date, the related Senior Percentage for
     such   Subgroup   for   such    Distribution   Date   plus   70%   of   the   related
     Subordinate Percentage for that Subgroup for such Distribution Date;

          (ii) for any Distribution Date after the 72nd Distribution Date but on
     or prior to the 84th   Distribution   Date, the related Senior Percentage for
     such   Subgroup   for   such    Distribution   Date   plus   60%   of   the   related
     Subordinate Percentage for that Subgroup for such Distribution Date;

          (iii) for any Distribution   Date after the 84th   Distribution Date but
     on or prior to the 96th   Distribution   Date, the related Senior   Percentage
     for   such   Subgroup   for such   Distribution   Date   plus 40% of the   related
     Subordinate Percentage for that Subgroup for such Distribution Date;

          (iv) for any Distribution Date after the 96th Distribution Date but on
     or prior to the 108th   Distribution Date, the related Senior Percentage for
     such   Subgroup   for   such    Distribution   Date   plus   20%   of   the   related
     Subordinate Percentage for that Subgroup for such Distribution Date; and

          (v) for any Distribution   Date thereafter,   the Senior   Percentage for
     such Subgroup for such Distribution Date.

     If on any Distribution Date the Senior Percentages for any Subgroup exceeds
the initial Senior   Percentage for that   Subgroup,   then the Senior   Accelerated
Distribution   Percentages for each Subgroup for that Distribution Date will once
again equal 100%.

     Any scheduled reduction to such Senior Accelerated   Distribution Percentage
shall not be made as of any Distribution Date unless:

     (a) the Stated   Principal   Balance of the Mortgage Loans delinquent 60 days
or more as set forth in the   Monthly   Statements   (including   Mortgage   Loans in
bankruptcy,   foreclosure   and REO)   averaged   over the   last   six   months,   as a
percentage of the aggregate Group Subordinate Amounts, is less than 50% and

     (b)   Realized   Losses on the Mortgage   Loans to date for that   Distribution
Date as set forth in the   Monthly   Statements,   if   occurring   during the sixth,
seventh, eighth, ninth or tenth year, or any year thereafter,   after the closing
date, are less than 30%, 35%, 40%, 45% or 50%,   respectively,   of the sum of the
initial aggregate Group Subordinate Amounts;

     Notwithstanding   the   foregoing,   upon   reduction of the Class   Certificate
Balances   of the   Senior   Certificates   related   to a   Subgroup,   other than the
related Class PO   Certificates,   to zero,   the Senior   Accelerated   Distribution
Percentage, as the case may be, will equal 0%.

                                      -41-


<PAGE>


     Senior   Certificates:   As specified in the   Preliminary   Statement,   as the
context requires.

     Senior Interest   Distribution Amount: With respect to any Distribution Date
and each Loan Group, the aggregate amount of Accrued Certificate   Interest to be
distributed   to   the   holders   of   the   related   Senior   Certificates   for   that
Distribution Date pursuant to Section 4.02(a)(i).

     Senior Percentage: means, as the context requires:

          (i) for   each   Distribution   Date and each   Subgroup,   the   percentage
     equivalent of a fraction,   the   numerator of which is the   aggregate   Class
     Certificate   Balance of the Senior   Certificates of the related Certificate
     Group   (other   than the Class PO   Certificates)   immediately   prior to such
     Distribution Date, and the denominator of which is the Subgroup Fraction of