! ! DEFINE DYNAMIC STICKY #YM_HE6MO80PCT = LOAN(“SCHAM_PREP_AMT”) * 80% * LOAN(“GROSSRATE”) / 1200* 6 ! Collateral OVER ! ! Factor —Delay— ! Type Date P/Y BV Use BV for 0 WL 20050901 9999 9999 FALSE ! ! Pool# Type Gross Current Original —Fee— Maturity Orig ARM Gross #mos #mos P#mos P#mos Life Reset Life Max Look ! Coupon Factor Balance P/Y BV P/Y BV Term Index Margin ToRst RstPer ToRst RstPer Cap Cap Floor Negam Back !! BEGINNING OF COLLATERAL M 1 “6 Month ARM — Group I — MI — 1 Lien” WL 00 WAC 7.15030 ( 1861787.20 / 1861787.20 ); 1861787.20 2.145 2.145 355:5 355:5 360 NO_CHECK ARM LIBOR_6MO 5.94417 2 6 SYNC_INT 14.15030 1.50000 7.15030 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 7.15030 GROUP “13” PREPAY_FLAG NONE ; TEASER M 2 “6 Month ARM — Group I — No MI — 1 Lien” WL 00 WAC 7.01441 ( 1792378.29 / 1792378.29 ); 1792378.29 .525 .525 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 5.74439 3 6 SYNC_INT 14.01441 1.50000 7.01441 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 7.01441 GROUP “13” PREPAY_FLAG NONE ; TEASER M 3 “6 Month ARM — Group II — MI — 1 Lien” WL 00 WAC 7.24076 ( 3452751.91 / 3452751.91 ); 3452751.91 2.145 2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 5.82584 3 6 SYNC_INT 14.02408 1.39166 7.24076 0 0 INIT_PERCAP 1.78332 ORIG_GROSSRATE 7.24076 GROUP “26” PREPAY_FLAG NONE ; TEASER M 4 “6 Month ARM — Group II — No MI — 1 Lien” WL 00 WAC 6.99425 ( 1976743.57 / 1976743.57 ); 1976743.57 .525 .525 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 6.31370 3 6 SYNC_INT 13.99425 1.50000 6.99425 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 6.99425 GROUP “26” PREPAY_FLAG NONE ; TEASER M 5 “ARM 1/29 — Group I — MI — 1 Lien” WL 00 WAC 7.22688 ( 8683529.11 / 8683529.11 ); 8683529.11 2.145 2.145 355:5 355:5 360 NO_CHECK ARM LIBOR_6MO 5.58699 8 6 SYNC_INT 14.22688 1.50000 7.22688 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 7.22688 GROUP “13” PREPAY_FLAG NONE ; TEASER
M 6 “ARM 1/29 — Group I — No MI — 1 Lien” WL 00 WAC 6.89451 ( 11280606.57 / 11280606.57 ); 11280606.57 .525 .525 355:5 355:5 360 NO_CHECK ARM LIBOR_6MO 5.98665 8 6 SYNC_INT 13.89451 1.50000 6.89451 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 6.89451 GROUP “13” PREPAY_FLAG NONE ; TEASER M 7 “ARM 1/29 — Group II — MI — 1 Lien” WL 00 WAC 6.92791 ( 6250343.47 / 6250343.47 ); 6250343.47 2.145 2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 5.89668 9 6 SYNC_INT 13.92791 1.50000 6.92791 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 6.92791 GROUP “26” PREPAY_FLAG NONE ; TEASER M 8 “ARM 1/29 — Group II — No MI — 1 Lien” WL 00 WAC 6.81821 ( 10263419.71 / 10263419.71 ); 10263419.71 .525 .525 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 6.12516 9 6 SYNC_INT 13.81821 1.50000 6.81821 0 0 INIT_PERCAP 2.00000 ORIG_GROSSRATE 6.81821 GROUP “26” PREPAY_FLAG NONE ; TEASER M 9 “ARM 2/28 — Group I — MI — 1 Lien” WL 00 WAC 7.60687 ( 250100193.23 / 250100193.23 ); 250100193.23 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.16191 22 6 SYNC_INT 14.24836 1.51160 7.60712 0 0 INIT_PERCAP 2.53291 ORIG_GROSSRATE 7.60687 GROUP “13” PREPAY_FLAG NONE ; TEASER M 10 “ARM 2/28 — Group I — No MI — 1 Lien” WL 00 WAC 7.37272 ( 426537174.22 / 426537174.22 ); 426537174.22 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.04963 22 6 SYNC_INT 13.94008 1.44706 7.37210 0 0 INIT_PERCAP 2.48473 ORIG_GROSSRATE 7.37272 GROUP “13” PREPAY_FLAG NONE ; TEASER M 11 “ARM 2/28 — Group II — MI — 1 Lien” WL 00 WAC 7.53766 ( 172570821.05 / 172570821.05 ); 172570821.05 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.23984 22 6 SYNC_INT 14.15381 1.48007 7.53764 0 0 INIT_PERCAP 2.47692 ORIG_GROSSRATE 7.53766 GROUP “26” PREPAY_FLAG NONE ; TEASER M 12 “ARM 2/28 — Group II — No MI — 1 Lien” WL 00 WAC 7.10723 ( 419198339.01 / 419198339.01 ); 419198339.01 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.94685 22 6 SYNC_INT 13.68126 1.40515 7.09753 0 0 INIT_PERCAP 2.34625 ORIG_GROSSRATE 7.10723 GROUP “26” PREPAY_FLAG NONE ; TEASER M 13 “ARM 2/28 — IO — Group I — MI — 1 Lien” WL 00 WAC 6.93412 ( 63786008.86 / 63786008.86 ); 63786008.86 2.145 2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 6.01813 21 6 SYNC_INT 13.81406 1.71976 6.93412 0 0
INIT_PERCAP 2.65613 ORIG_GROSSRATE 6.93412 AMORT NONE FOR 32 GROUP “13” PREPAY_FLAG NONE ; TEASER M 14 “ARM 2/28 — IO — Group I — No MI — 1 Lien” WL 00 WAC 6.59460 ( 123737067.35 / 123737067.35 ); 123737067.35 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.82972 22 6 SYNC_INT 13.42875 1.58974 6.59460 0 0 INIT_PERCAP 2.43529 ORIG_GROSSRATE 6.59460 AMORT NONE FOR 39 GROUP “13” PREPAY_FLAG NONE ; TEASER M 15 “ARM 2/28 — IO — Group II — MI — 1 Lien” WL 00 WAC 6.85109 ( 87515557.86 / 87515557.86 ); 87515557.86 2.145 2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 6.04131 21 6 SYNC_INT 13.67614 1.64958 6.85109 0 0 INIT_PERCAP 2.64529 ORIG_GROSSRATE 6.85109 AMORT NONE FOR 34 GROUP “26” PREPAY_FLAG NONE ; TEASER M 16 “ARM 2/28 — IO — Group II — No MI — 1 Lien” WL 00 WAC 6.57630 ( 293937419.36 / 293937419.36 ); 293937419.36 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.78312 22 6 SYNC_INT 13.37659 1.46020 6.57630 0 0 INIT_PERCAP 2.25072 ORIG_GROSSRATE 6.57630 AMORT NONE FOR 42 GROUP “26” PREPAY_FLAG NONE ; TEASER M 17 “ARM 3/27 — Group I — MI — 1 Lien” WL 00 WAC 7.62826 ( 15906812.64 / 15906812.64 ); 15906812.64 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.26895 34 6 SYNC_INT 14.49349 1.74442 7.62826 0 0 INIT_PERCAP 2.56933 ORIG_GROSSRATE 7.62826 GROUP “13” PREPAY_FLAG NONE ; TEASER M 18 “ARM 3/27 — Group I — No MI — 1 Lien” WL 00 WAC 7.46192 ( 14372149.89 / 14372149.89 ); 14372149.89 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.94606 34 6 SYNC_INT 14.28720 1.70331 7.46192 0 0 INIT_PERCAP 2.55985 ORIG_GROSSRATE 7.46192 GROUP “13” PREPAY_FLAG NONE ; TEASER M 19 “ARM 3/27 — Group II — MI — 1 Lien” WL 00 WAC 7.60516 ( 10552313.93 / 10552313.93 ); 10552313.93 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.20135 34 6 SYNC_INT 14.53602 1.79628 7.60516 0 0 INIT_PERCAP 2.59627 ORIG_GROSSRATE 7.60516 GROUP “26” PREPAY_FLAG NONE ; TEASER M 20 “ARM 3/27 — Group II — No MI — 1 Lien” WL 00 WAC 7.31983 ( 11678183.11 / 11678183.11 ); 11678183.11 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.16724 34 6 SYNC_INT 14.22850 1.81766 7.31983 0 0 INIT_PERCAP 2.72700 ORIG_GROSSRATE 7.31983 GROUP “26” PREPAY_FLAG NONE ; TEASER M 21 “ARM 3/27 — IO — Group I — MI — 1 Lien” WL 00 WAC 6.70079 ( 6056933.92 / 6056933.92 ); 6056933.92 2.145
2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 6.06389 33 6 SYNC_INT 13.70079 1.91828 6.70079 0 0 INIT_PERCAP 2.52907 ORIG_GROSSRATE 6.70079 AMORT NONE FOR 46 GROUP “13” PREPAY_FLAG NONE ; TEASER M 22 “ARM 3/27 — IO — Group I — No MI — 1 Lien” WL 00 WAC 6.42373 ( 7554265.55 / 7554265.55 ); 7554265.55 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.80992 34 6 SYNC_INT 13.42373 1.84239 6.42373 0 0 INIT_PERCAP 2.38258 ORIG_GROSSRATE 6.42373 AMORT NONE FOR 45 GROUP “13” PREPAY_FLAG NONE ; TEASER M 23 “ARM 3/27 — IO — Group II — MI — 1 Lien” WL 00 WAC 6.47411 ( 7354383.87 / 7354383.87 ); 7354383.87 2.145 2.145 356:4 356:4 360 NO_CHECK ARM LIBOR_6MO 5.99732 33 6 SYNC_INT 13.47411 1.91699 6.47411 0 0 INIT_PERCAP 2.83279 ORIG_GROSSRATE 6.47411 AMORT NONE FOR 38 GROUP “26” PREPAY_FLAG NONE ; TEASER M 24 “ARM 3/27 — IO — Group II — No MI — 1 Lien” WL 00 WAC 6.36366 ( 15721827.05 / 15721827.05 ); 15721827.05 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.81847 34 6 SYNC_INT 13.36366 1.77256 6.36366 0 0 INIT_PERCAP 2.20837 ORIG_GROSSRATE 6.36366 AMORT NONE FOR 48 GROUP “26” PREPAY_FLAG NONE ; TEASER M 25 “ARM 5/25 — Group I — MI — 1 Lien” WL 00 WAC 7.55854 ( 780949.21 / 780949.21 ); 780949.21 2.145 2.145 358:2 358:2 360 NO_CHECK ARM LIBOR_6MO 6.26446 59 6 SYNC_INT 13.72864 1.12535 7.55854 0 0 INIT_PERCAP 2.86578 ORIG_GROSSRATE 7.55854 GROUP “13” PREPAY_FLAG NONE ; TEASER M 26 “ARM 5/25 — Group I — No MI — 1 Lien” WL 00 WAC 6.66729 ( 7093047.73 / 7093047.73 ); 7093047.73 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.00985 58 6 SYNC_INT 13.41020 1.73258 6.66729 0 0 INIT_PERCAP 2.96898 ORIG_GROSSRATE 6.66729 GROUP “13” PREPAY_FLAG NONE ; TEASER M 27 “ARM 5/25 — Group II — MI — 1 Lien” WL 00 WAC 7.58841 ( 4173280.90 / 4173280.90 ); 4173280.90 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.32578 58 6 SYNC_INT 14.23486 1.41850 7.58841 0 0 INIT_PERCAP 2.31618 ORIG_GROSSRATE 7.58841 GROUP “26” PREPAY_FLAG NONE ; TEASER M 28 “ARM 5/25 — Group II — No MI — 1 Lien” WL 00 WAC 6.59904 ( 3429862.67 / 3429862.67 ); 3429862.67 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.02603 58 6 SYNC_INT 13.44380 1.77347 6.59904 0 0 INIT_PERCAP 2.78611 ORIG_GROSSRATE 6.59904 GROUP “26” PREPAY_FLAG NONE ; TEASER
M 29 “ARM 5/25 — IO — Group I — No MI — 1 Lien” WL 00 WAC 7.12203 ( 1423955.08 / 1423955.08 ); 1423955.08 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.49267 58 6 SYNC_INT 14.12203 1.50000 7.12203 0 0 ORIG_GROSSRATE 7.12203 AMORT NONE FOR 60 GROUP “13” PREPAY_FLAG NONE ; TEASER M 30 “ARM 5/25 — IO — Group II — MI — 1 Lien” WL 00 WAC 7.28877 ( 681000.00 / 681000.00 ); 681000.00 2.145 2.145 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 6.18891 58 6 SYNC_INT 14.28877 1.50000 7.28877 0 0 ORIG_GROSSRATE 7.28877 AMORT NONE FOR 60 GROUP “26” PREPAY_FLAG NONE ; TEASER M 31 “ARM 5/25 — IO — Group II — No MI — 1 Lien” WL 00 WAC 6.64212 ( 1044600.00 / 1044600.00 ); 1044600.00 .525 .525 357:3 357:3 360 NO_CHECK ARM LIBOR_6MO 5.36091 58 6 SYNC_INT 13.16826 1.26307 6.64212 0 0 INIT_PERCAP 2.21080 ORIG_GROSSRATE 6.64212 AMORT NONE FOR 60 GROUP “26” PREPAY_FLAG NONE ; TEASER M 32 “Balloon 30/15 — Group I — No MI — 2 Lien” WL 00 WAC 10.39380 ( 11377834.71 / 11377834.71 ); 11377834.71 .525 .525 358:2 358:2 360 NO_CHECK BALLOON SCHED_BOTH 180 GROUP “12” PREPAY_FLAG NONE ; M 33 “Balloon 30/15 — Group II — No MI — 2 Lien” WL 00 WAC 10.06225 ( 36219809.75 / 36219809.75 ); 36219809.75 .525 .525 357:3 357:3 360 NO_CHECK BALLOON SCHED_BOTH 180 GROUP “25” PREPAY_FLAG NONE ; M 34 “Fixed 10 yr — Group I — No MI — 1 Lien” WL 00 WAC 6.93440 ( 420605.33 / 420605.33 ); 420605.33 .525 .525 116:4 116:4 120 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 35 “Fixed 15 yr — Group I — MI — 1 Lien” WL 00 WAC 7.83091 ( 2158543.29 / 2158543.29 ); 2158543.29 2.145 2.145 177:3 177:3 180 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 36 “Fixed 15 yr — Group I — No MI — 1 Lien” WL 00 WAC 7.43481 ( 3463336.36 / 3463336.36 ); 3463336.36 .525 .525 177:3 177:3 180 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 37 “Fixed 15 yr — Group I — No MI — 2 Lien” WL 00 WAC 10.28733 ( 505602.93 / 505602.93 ); 505602.93 .525 .525 178:2 178:2 180 NO_CHECK GROUP “12” PREPAY_FLAG NONE ; M 38 “Fixed 15 yr — Group II — MI — 1 Lien” WL 00 WAC 8.38561 ( 750455.00 / 750455.00 ); 750455.00 2.145 2.145
177:3 177:3 180 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 39 “Fixed 15 yr — Group II — No MI — 1 Lien” WL 00 WAC 7.39221 ( 2399485.65 / 2399485.65 ); 2399485.65 .525 .525 177:3 177:3 180 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 40 “Fixed 15 yr — Group II — No MI — 2 Lien” WL 00 WAC 10.70558 ( 356108.80 / 356108.80 ); 356108.80 .525 .525 177:3 177:3 180 NO_CHECK GROUP “25” PREPAY_FLAG NONE ; M 41 “Fixed 15 yr — IO — Group I — No MI — 1 Lien” WL 00 WAC 7.44000 ( 60000.00 / 60000.00 ); 60000.00 .525 .525 178:2 178:2 180 NO_CHECK AMORT NONE FOR 60 GROUP “11” PREPAY_FLAG NONE ; M 42 “Fixed 20 yr — Group I — MI — 1 Lien” WL 00 WAC 7.12318 ( 853754.38 / 853754.38 ); 853754.38 2.145 2.145 238:2 238:2 240 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 43 “Fixed 20 yr — Group I — No MI — 1 Lien” WL 00 WAC 7.00770 ( 1694294.72 / 1694294.72 ); 1694294.72 .525 .525 236:4 236:4 240 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 44 “Fixed 20 yr — Group I — No MI — 2 Lien” WL 00 WAC 10.34537 ( 1359006.56 / 1359006.56 ); 1359006.56 .525 .525 237:3 237:3 240 NO_CHECK GROUP “12” PREPAY_FLAG NONE ; M 45 “Fixed 20 yr — Group II — MI — 1 Lien” WL 00 WAC 7.59324 ( 944178.59 / 944178.59 ); 944178.59 2.145 2.145 236:4 236:4 240 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 46 “Fixed 20 yr — Group II — No MI — 1 Lien” WL 00 WAC 6.95892 ( 1271307.16 / 1271307.16 ); 1271307.16 .525 .525 237:3 237:3 240 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 47 “Fixed 20 yr — Group II — No MI — 2 Lien” WL 00 WAC 10.19820 ( 3509205.16 / 3509205.16 ); 3509205.16 .525 .525 237:3 237:3 240 NO_CHECK GROUP “25” PREPAY_FLAG NONE ; M 48 “Fixed 25 yr — Group I — MI — 1 Lien” WL 00 WAC 6.29000 ( 79889.61 / 79889.61 ); 79889.61 2.145 2.145 297:3 297:3 300 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 49 “Fixed 25 yr — Group I — No MI — 1 Lien” WL 00 WAC 6.29000 ( 165671.09 / 165671.09 ); 165671.09 .525 .525 298:2 298:2 300 NO_CHECK GROUP “11” PREPAY_FLAG NONE ;
M 50 “Fixed 25 yr — Group II — No MI — 1 Lien” WL 00 WAC 7.87500 ( 92200.26 / 92200.26 ); 92200.26 .525 .525 297:3 297:3 300 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 51 “Fixed 30 yr — Group I — MI — 1 Lien” WL 00 WAC 7.30448 ( 43892193.99 / 43892193.99 ); 43892193.99 2.145 2.145 356:4 356:4 360 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 52 “Fixed 30 yr — Group I — No MI — 1 Lien” WL 00 WAC 6.94238 ( 87244474.53 / 87244474.53 ); 87244474.53 .525 .525 357:3 357:3 360 NO_CHECK GROUP “11” PREPAY_FLAG NONE ; M 53 “Fixed 30 yr — Group I — No MI — 2 Lien” WL 00 WAC 11.95711 ( 94916.85 / 94916.85 ); 94916.85 .525 .525 357:3 357:3 360 NO_CHECK GROUP “12” PREPAY_FLAG NONE ; M 54 “Fixed 30 yr — Group II — MI — 1 Lien” WL 00 WAC 7.34917 ( 32637671.28 / 32637671.28 ); 32637671.28 2.145 2.145 357:3 357:3 360 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 55 “Fixed 30 yr — Group II — No MI — 1 Lien” WL 00 WAC 6.93513 ( 70223896.43 / 70223896.43 ); 70223896.43 .525 .525 357:3 357:3 360 NO_CHECK GROUP “24” PREPAY_FLAG NONE ; M 56 “Fixed 30 yr — Group II — No MI — 2 Lien” WL 00 WAC 11.99000 ( 174847.92 / 174847.92 ); 174847.92 .525 .525 357:3 357:3 360 NO_CHECK GROUP “25” PREPAY_FLAG NONE ; M 57 “Fixed 30 yr — IO — Group I — MI — 1 Lien” WL 00 WAC 6.52092 ( 4198547.91 / 4198547.91 ); 4198547.91 2.145 2.145 356:4 356:4 360 NO_CHECK AMORT NONE FOR 60 GROUP “11” PREPAY_FLAG NONE ; M 58 “Fixed 30 yr — IO — Group I — No MI — 1 Lien” WL 00 WAC 6.36007 ( 4859001.63 / 4859001.63 ); 4859001.63 .525 .525 356:4 356:4 360 NO_CHECK AMORT NONE FOR 60 GROUP “11” PREPAY_FLAG NONE ; M 59 “Fixed 30 yr — IO — Group II — MI — 1 Lien” WL 00 WAC 6.41465 ( 5101427.71 / 5101427.71 ); 5101427.71 2.145 2.145 356:4 356:4 360 NO_CHECK AMORT NONE FOR 60 GROUP “24” PREPAY_FLAG NONE ; M 60 “Fixed 30 yr — IO — Group II — No MI — 1 Lien” WL 00 WAC 6.34095 ( 11271520.16 / 11271520.16 ); 11271520.16 .525 .525 357:3 357:3 360 NO_CHECK AMORT NONE FOR 60 GROUP “24” PREPAY_FLAG NONE ;
