•  For any Distribution Date, the "ZB Jump Percentage" means the percentage (not greater than 99%) derived by dividing (a) the excess, if any, of the 301% PSA Balance over the remaining Principal Balance of the Group 1 Trust Assets, after giving effect to their reduction on that Distribution Date by (b) the excess of the 301% PSA Balance over the 434% PSA Balance SECURITY GROUP 2 The Group 2 Principal Distribution Amount will be allocated in the following order of priority: 1.  To TA, until retired 2.  Concurrently, to TB and TC, pro rata, until retired SECURITY GROUP 3 The Group 3 Principal Distribution Amount will be allocated, concurrently, as follows: 1.  49.9994063520%, sequentially, to MA, MB and MC, in that order, until retired 2.  50.0005936480%, concurrently, to MD, ME and MG, pro rata, until retired SECURITY GROUP 4 The Group 4 Principal Distribution Amount will be allocated, concurrently, to FA and SA, pro rata, until retired SECURITY GROUP 5 The Group 5 Principal Distribution Amount will be allocated to FB, until retired SECURITY GROUP 6 The Group 6 Principal Distribution Amount will be allocated to FD, until retired SECURITY GROUP 7 The Group 7 Principal Distribution Amount will be allocated in the following order of priority: 1.  Sequentially, to PA, PB and EP, in that order, until reduced to their Aggregate Scheduled Principal Balance for that Distribution Date 2.  Sequentially, to JA, JB and JC, in that order, until reduced to their Aggregate Scheduled Principal Balance for that Distribution Date 3.  Concurrently: a.  57.4229691877% to AG, until retired b.  42.5770308123% in the following order of priority: i.  Concurrently, to AH and AK, pro rata, until retired ii.  Sequentially, to AB and AC, in that order, until retired S-7