Class A Pass-Through Rate As to the Class A-1 and Class A-R Certificates, the Class A Fixed Pass-Through Rate. The Class A-PO Certificates are not entitled to interest and have no Class A Pass-Through Rate.

Class A-1 Pass-Through Rate For any Distribution Date, a per annum rate equal to 2.0840%.

Class A-5 Pass-Through Rate For any Distribution Date, a per annum rate equal to 3.1156%.

Fixed Pass-Through Rate Floating Pass-Through Rate" "Guaranteed Investment Contract"

Class A-S Pass-Through Rate For any Distribution Date, a per annum rate equal to 3.4150%.

Class H Pass-Through Rate With respect to any Distribution Date, a per annum rate equal to the Weighted Average Net Mortgage Rate.

Class C Pass-Through Rate For any Distribution Date, a per annum rate equal to the WAC Rate for such Distribution Date.

Class X-B Pass-Through Rate For any Distribution Date, the Class X Strip Rate for the Class X-B Component for such Distribution Date.

Class A-2 Pass-Through Rate With respect to any Distribution Date, a per annum rate equal to 3.278%.

Class X-D Pass-Through Rate For any Distribution Date, the weighted average of the Class X Strip Rates for the Class X-D Components for such Distribution Date (weighted on the basis of the respective Component Notional Amounts of such Components outstanding immediately prior to such Distribution Date).

Class B Pass-Through Rate As to any Distribution Date, 6.750% per annum.

Pass-Through Rate For any interest bearing Class of Certificates or Component, the per annum rate set forth or calculated in the manner described in the Preliminary Statement.

Class X-A Pass-Through Rate For any Distribution Date, the weighted average of Class X Strip Rates for the Class X-A Components for such Distribution Date (weighted on the basis of the respective Component Notional Amounts of such Components outstanding immediately prior to such Distribution Date).

Class A-3 Pass-Through Rate For any Distribution Date, a per annum rate equal to 2.8600%.

Class G Pass-Through Rate For any Distribution Date, a per annum rate equal to the WAC Rate for such Distribution Date.

Class A-4 Pass-Through Rate With respect to any Distribution Date, a per annum rate equal to 3.469%.

Class D Pass-Through Rate For any Distribution Date, a per annum rate equal to 2.00000%.

Class B-2 Pass-Through Rate For the first Distribution Date, 6.850% per annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR plus the Class B-2 Margin,

Class F Pass-Through Rate With respect to any Distribution Date, a per annum rate equal to the Weighted Average Net Mortgage Rate.

Net WAC Pass-Through Rate With respect to the Class A-1 Certificates and any Distribution Date, a rate per annum (adjusted for the actual number of days elapsed in the related Interest Accrual Period) equal to the product of (i) twelve and (ii) a fraction, expressed as a percentage, the numerator of which is the amount of interest which accrued on the Group I Mortgage Loans in the prior calendar month minus the fees payable to the Servicer, the Master Servicer and the Credit Risk Manager with respect to the Group I Mortgage Loans for such Distribution Date and the Group I Allocation Percentage of any Net Swap Payment payable to the Swap Provider and Swap Termination Payment payable to the Swap Provider which was not caused by the occurrence of a Swap Provider Trigger Event, in each case for such Distribution Date and the denominator of which is the aggregate principal balance of the Group I Mortgage Loans as of the last day of the immediately preceding Due Period (or as of the Cut-off Date with respect to the first Distribution Date). For federal income tax purposes, the economic equivalent of such rate shall be expressed as the weighted average of (adjusted for the actual number of days elapsed in the related Interest Accrual Period) the REMIC II Remittance Rate on REMIC II Regular Interest I-GRP, weighted on the basis of the Uncertificated Balance of such REMIC II Regular Interest. With respect to the Class A-2 Certificates and any Distribution Date, a rate per annum (adjusted for the actual number of days elapsed in the related Interest Accrual Period) equal to the product of (i) twelve and (ii) a fraction, expressed as a percentage, the numerator of which is the amount of interest which accrued on the Group II Mortgage Loans in the prior calendar month minus the fees payable to the Servicer, the Master Servicer and the Credit Risk Manager with respect to the Group II Mortgage Loans for such Distribution Date and the Group II Allocation Percentage of any Net Swap Payment payable to the Swap Provider and Swap Termination Payment payable to the Swap Provider which was not caused by the occurrence of a Swap Provider Trigger Event, in each case for such Distribution Date and the denominator of which is the aggregate principal balance of the Group II Mortgage Loans as of the last day of the immediately preceding Due Period (or as of the Cut-off Date with respect to the first Distribution Date). For federal income tax purposes, the economic equivalent of such rate shall be expressed as the weighted average of (adjusted for the actual number of days elapsed in the related Interest Accrual Period) the REMIC II Remittance Rate on REMIC II Regular Interest II-GRP, weighted on the basis of the Uncertificated Balance of such REMIC II Regular Interest. With respect to the Mezzanine Certificates and any Distribution Date a rate per annum equal to the weighted average (weighted in proportion to the results of subtracting from the Scheduled Principal Balance of each loan group, the Certificate Principal Balance of the related Class A Certificates), of (i) the Net WAC Pass-Through Rate for the Class A-1 Certificates and (ii) the Net WAC Pass-Through Rate for the Class A-2 Certificates. For federal income tax purposes, the economic equivalent of such rate shall be expressed as the weighted average of (adjusted for the actual number of days elapsed in the related Interest Accrual Period) the REMIC II Remittance Rates on (a) REMIC II Regular Interest I-SUB, subject to a cap and a floor equal to the REMIC II Remittance Rate on REMIC II Regular Interest I-GRP, and (b) REMIC II Regular Interest II-SUB, subject to a cap and a floor equal to the REMIC II Remittance Rate on REMIC II Regular Interest II-GRP, weighted on the basis of the Uncertificated Balance of each such REMIC II Regular Interest.

Class B-1 Pass-Through Rate For the first Distribution Date, 6.4350% per annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR plus the Class B-1 Margin, (2) the Weighted Average Available Funds Cap for such Distribution Date and (3) the Weighted Average Maximum Rate Cap for such Distribution Date.

Class B-3 Pass-Through Rate For the first Distribution Date, 4.120% per annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR plus the Class B-3 Margin, (2) the Weighted Maximum Rate Cap and (3) the Available Funds Cap for such Distribution Date.

Class E Pass-Through Rate With respect to any Distribution Date, a per annum rate equal to the Weighted Average Net Mortgage Rate.

REMIC Pass-Through Rate In the case of a Class of the Class A, Class M and Class B Certificates, the Upper Tier REMIC Net WAC Cap for the Corresponding REMIC Regular Interest.

Class M-1 Pass-Through Rate For the first Distribution Date, ____% per annum. As of any Distribution Date thereafter, the lesser of (1) One-Month LIBOR plus the Class M-1 Margin and (2) the Weighted Average Available Funds Cap for such Distribution Date.