b21 := (1,518,1543,702)(2,1118,451,871)(3,1050,965,1336)(4,240,801,656)(5,1041, 1463,1215)(6,1614,114,1465)(7,1649,685,363)(8,1228,332,468)(9,1171,614, 981)(10,470,525,583)(11,262,532,317)(12,1635,1261,1672)(13,79,1384,579) (14,1114,87,260)(15,1063,69,1066)(16,160,1229,1613)(17,128,366,1562)(18, 275,455,1676)(19,626,441,109)(20,619,28,633)(21,377,1378,1554)(22,253, 1541,729)(23,743,1007,1362)(24,1313,220,49)(25,426,823,1601)(26,1235,808, 1069)(27,790,657,51)(29,1599,1076,1156)(30,1375,117,1031)(31,187,1222, 1039)(32,255,1158,673)(33,553,1258,1480)(34,837,814,726)(35,677,218,257) (36,391,791,1348)(37,1555,918,43)(38,224,1200,42)(39,459,1170,1067)(40, 351,719,990)(41,1421,1638,1098)(44,612,402,1422)(45,135,851,1281)(46, 1531,854,1732)(47,1040,142,1217)(48,1305,818,819)(50,307,904,634)(52, 1160,446,178)(53,158,1453,1417)(54,1354,1401,192)(55,1386,336,169)(56, 1517,136,91)(57,507,1665,1400)(58,759,1510,1260)(59,1733,569,1514)(60, 783,148,1145)(61,1475,511,584)(62,121,1163,638)(63,168,1107,471)(64,1458, 1525,1505)(65,1523,816,665)(66,556,333,1301)(67,452,495,799)(68,1716,891, 222)(70,288,94,588)(71,434,1690,1462)(72,1627,868,1176)(73,526,413,122) (74,748,1508,1009)(75,1466,885,936)(76,1366,1332,347)(77,102,1664,931) (78,227,1503,193)(80,103,1407,1299)(81,1270,1736,973)(82,364,1011,378) (83,1252,650,1753)(84,1351,882,132)(85,616,825,503)(86,1329,1435,152)(88, 216,1312,1478)(89,245,827,155)(90,842,1117,733)(92,1038,1546,1741)(93, 1099,1576,554)(95,1506,1208,1640)(96,1283,611,326)(97,566,161,958)(98, 652,1670,485)(99,144,516,1468)(100,309,886,1551)(101,599,1519,949)(104, 1486,795,944)(105,290,1678,231)(106,1199,815,1248)(107,921,1359,489)(108, 843,1679,798)(110,1209,1717,953)(111,1544,340,1164)(112,301,684,1746) (113,1349,420,175)(115,430,788,421)(116,1077,1455,1550)(118,708,1442, 1703)(119,983,615,499)(120,259,267,1504)(123,865,1377,1677)(124,647,1749, 970)(125,610,927,1511)(126,1720,1569,1451)(127,325,609,653)(129,1495, 1380,545)(130,458,1294,1395)(131,298,1420,699)(133,738,1639,1597)(134, 750,1087,1286)(137,171,1065,1027)(138,1285,1105,1197)(139,1587,1692,646) (140,754,312,1131)(141,203,1579,762)(143,1058,1425,691)(145,706,687,1532) (146,1682,440,390)(147,787,880,863)(149,438,1155,649)(150,412,280,1042) (151,208,1343,348)(153,975,1070,1583)(154,811,914,774)(156,1188,1476, 1083)(157,1428,343,968)(159,1568,1714,200)(162,460,1214,564)(163,429, 1723,1134)(164,731,595,1713)(165,1337,217,1446)(166,846,464,535)(167,205, 417,893)(170,933,1534,233)(172,797,314,1264)(173,454,573,629)(174,1393, 1524,1091)(176,1295,1693,444)(177,1379,1124,888)(179,807,697,661)(180, 967,1346,1573)(181,254,1089,1080)(182,841,692,1352)(183,1666,1052,1236) (184,515,1559,604)(185,822,398,789)(186,196,866,1055)(188,1196,1017,1071) (189,1115,1022,206)(190,416,932,561)(191,713,1561,805)(194,1518,1057,517) (195,232,486,1725)(197,608,1737,641)(198,1316,1120,491)(199,621,1096, 1056)(201,552,1701,335)(202,881,500,1441)(204,1500,1575,1043)(207,395, 1734,508)(209,892,313,230)(210,1381,1742,1030)(211,622,1594,234)(212,732, 373,1689)(213,1136,358,1181)(214,1173,436,558)(215,1206,1728,1018)(219, 1300,549,974)(221,1023,1657,803)(223,571,1408,996)(225,1207,1051,1482) (226,1013,997,1432)(228,1326,722,1372)(229,696,829,1095)(235,1256,1282, 442)(236,1253,1075,1490)(237,415,1566,1254)(238,1437,910,1374)(239,848, 466,1279)(241,1331,349,1637)(242,1590,422,1686)(243,1616,1187,676)(244, 1037,490,319)(246,1419,976,302)(247,681,435,1584)(248,1454,1642,850)(249, 1044,1340,926)(250,384,1350,1001)(251,306,894,864)(252,1245,322,300)(256, 998,716,1604)(258,1220,689,679)(261,751,746,919)(263,721,318,770)(264, 1450,1412,265)(266,605,1342,1438)(268,1238,530,1015)(269,1589,1617,356) (270,635,1445,906)(271,1729,1203,1064)(272,870,1135,628)(273,447,304,631) (274,1367,1053,1572)(276,467,565,1595)(277,1608,1121,862)(278,1646,1405, 1062)(279,858,1499,1166)(281,826,876,714)(282,1684,756,989)(283,510,305, 901)(284,1607,1085,350)(285,315,668,1005)(286,1404,1172,1515)(287,449, 1467,625)(289,941,950,1211)(291,972,1624,323)(292,389,1060,1497)(293, 1687,1293,620)(294,1046,1257,1149)(295,321,1364,836)(296,890,397,1481) (297,1681,345,794)(299,1413,462,645)(303,630,1633,1727)(308,1426,1431, 682)(310,580,408,830)(311,473,496,648)(316,1334,654,1034)(320,1081,353, 410)(324,1461,777,1327)(327,1606,1272,1526)(328,817,453,701)(329,375,528, 878)(330,1177,1290,1634)(331,767,1560,792)(334,1498,400,370)(337,488,678, 670)(338,674,1542,1104)(339,1288)(341,409,1266,405)(342,1667,1390,533) (344,1719,1491,1151)(346,617,723,586)(352,1175,1133,735)(354,1328,1190, 849)(355,1600,1661,945)(357,362,1580,522)(359,1397,482,1479)(360,365, 1247,1227)(361,1603,550,1094)(367,1092,1581,669)(368,966,1592,1459)(369, 982,578,1194)(371,760,1014,385)(372,899,1161,551)(374,1263,637,724)(376, 1314,693,1232)(379,1143,1675,776)(380,959,1735,1142)(381,557,1020,1470) (382,1513,930,725)(383,1278,1021,1355)(386,1731,1512,786)(387,1126,954, 1137)(388,1296,765,572)(392,666,1139,1271)(393,1652,1434,1471)(394,785, 907,1648)(396,1488,879,1292)(399,581,1025,1509)(401,810,867,703)(403, 1174,1416,695)(404,1243,742,1000)(406,1645,1032,860)(407,623,663,1492) (411,574,1162,939)(414,585,1429,1484)(418,1507,1371,1563)(419,529,534, 720)(423,1630,683,1093)(424,1493,1262,1320)(425,1306,686,929)(427,1570, 1738,709)(428,1338,938,1718)(431,1663,1688,480)(432,994,812,1483)(433, 820,1302,1618)(437,1240,796,1324)(439,1110,779,1265)(443,1333,1547,531) (445,536,582,603)(448,1276,1529,1068)(450,1396,1319,1423)(456,1448,1699, 1082)(457,1186,1414,1695)(461,1696,1146,1275)(463,1447,832,1609)(465, 1496,1273,1321)(469,519,771,1308)(472,718,1048,512)(474,1538,853,1385) (475,896,1724,1119)(476,568,861,1202)(477,1501,1449,728)(478,1249,1668, 1123)(479,1125,912,831)(481,1548,1259,1210)(483,1485,1244,986)(484,874, 1647,902)(487,1127,772,1100)(492,1586,559,916)(493,1436,1527,1392)(494, 1148)(497,1702)(498,1388,592,538)(501,1755,1277,1625)(502,1250,1218,514) (504,1712,1230,937)(505,1655,1653,1241)(506,607,1251,1582)(509,1430,591, 1168)(513,1376,1705,1307)(520,1335,1122,1184)(521,1659,655,847)(523,1612, 1489,1369)(524,1309,1477,1361)(527,793,872,840)(537,1201,991,1363)(539, 1026,1387,1641)(540,1204,1325,563)(541,577,1552,1061)(542,1108)(543,1165, 601,1427)(544,1298,1697,1358)(546,1368,1516,1537)(547,1474,1747,730)(548, 1730,1691,993)(555,1008,1339,1620)(560,1356,727,1623)(562,1558,1383,1167) (567,1073,1035,1494)(570,1536,606,734)(575,839,1473,782)(576,1605,763, 1528)(587,664,1318,1360)(589,909,835,1344)(590,1130,1632,1722)(593,1698, 1643,1456)(594,1345,1460,640)(596,1708,964,1585)(597,1024,757,632)(598, 1564,1090,1072)(600,1469,1033,749)(602,1112,1195,1530)(613,1016,739,1284) (618,856,1545,1654)(624,1113,1103,773)(627,636,911,1424)(639,1752,1650, 660)(642,1183,1182,1610)(643,1540,1225,844)(644,1644,717,1683)(651,662, 1028,1224)(658,852,1622,778)(659,1019,1047,1443)(667,1169,1267,1593)(671, 1740,1317,978)(672,917,715,1078)(675,1221,987,1382)(680,1739)(688,1304) (690,960,1111,979)(694,752,946,755)(698,1658,1140,834)(700,1411,961,977) (704,903,942,1662)(705,806,1415,1403)(707,1700,1615,1128)(710,1291,1399, 1406)(711,1709,923,1054)(712,920,1571,1152)(736,1323,1685,925)(737,1629, 1715,1611)(740,1452,1750,1347)(741,1191,887,984)(744,889,859,1234)(745, 1029,1138,1239)(747,1157,855,1341)(753,1704,1487,1179)(758,952,1457,1710) (761,1596,1726,1656)(764,1535,1002,1745)(766,1198)(768,1269,1205,809) (769,1180,804,1472)(775,957,828,956)(780,781,1502,1748)(784,943,1213, 1106)(800,1520,1242,1706)(802,1297)(813,1153,992,1539)(821,869,898,1010) (824,908,1109,1159)(833,1212,1418,1274)(838,1621,1004,1116)(845,985,1079, 1394)(857,1129,1619,915)(873,1557,1533,922)(875,905,1233,962)(877,1088, 924,1102)(883,1631,1598,1322)(884,1357)(895,1189,1237,980)(913,934,1402, 1588)(928,1660,1721,1711)(935,1303,1669,1006)(940,1754)(947,1289,1410, 1674)(948,1074,995,1315)(951,1097,1059,1219)(955,1246,1132,1602)(963, 1370)(969,1521,1255,999)(971,1391,1565,1439)(988,1193,1330,1567)(1003, 1216,1012,1268)(1036,1694,1310,1464)(1045,1365,1671,1556)(1049,1280,1433, 1673)(1084,1101,1150,1231)(1086,1680,1147,1651)(1141,1553,1744,1444) (1144,1373)(1154,1287,1398,1192)(1178,1578,1440,1751)(1185,1223,1311, 1626)(1226,1636,1522,1577)(1353,1707,1591,1549)(1389,1409,1628,1574);