SECURITY GROUP 4 The Group 4 Principal Distribution Amount and the GZ, KZ and MZ Accrual Amounts will be allocated as follows: •   The MZ Accrual Amount in the following order of priority: 1.  Concurrently, to MA and MF, pro rata, until retired 2.  To MZ, until retired •   The Group 4 Principal Distribution Amount and the GZ and KZ Accrual Amounts in the following order of priority: 1.  To the PAC Classes, until reduced to their Aggregate Scheduled Principal Balance for that Distribution Date, in the following order of priority: a.  Concurrently, to MA and MF, pro rata, until retired b.  To MZ, until retired 2.  Up to the Jump Percentage of the sum of the remaining Group 4 Principal Distribution Amount and GZ and KZ Accrual Amounts, to KZ, until retired 3.  To GZ, until reduced to its Scheduled Principal Balance for that Distribution Date 4.  To KZ, until retired 5.  To GZ, without regard to its Scheduled Principal Balances, until retired 6.  To the PAC Classes, in the same manner and priority described in step 1 above, but without regard to their Aggregate Scheduled Principal Balances, until retired •   For any Distribution Date, the "Jump Percentage" means the percentage (not greater than 99%) derived by dividing (A) the excess, if any, of the 425% PSA Group 4 Balance over the remaining Principal Balance of the Group 4 Trust Assets after giving effect to their reduction on that Distribution Date (the "Group 4 Trust Asset Balance") by (B) the excess of the 425% PSA Group 4 Balance over the 500% PSA Group 4 Balance SECURITY GROUP 5 The Group 5 Principal Distribution Amount and the LZ and ZL Accrual Amounts will be allocated as follows: •   The LZ Accrual Amount, sequentially, to LA and LZ, in that order, until retired •   The Group 5 Principal Distribution Amount and ZL Accrual Amount in the following order of priority: 1.  Sequentially, to LA and LZ, in that order, until reduced to their Aggregate Scheduled Principal Balance for that Distribution Date 2.  To ZL, until retired 3.  Sequentially, to LA and LZ, in that order, without regard to their Aggregate Scheduled Principal Balances, until retired B-34