b21 := (1,1172,448)(2,1154,297)(3,70,375)(4,1174,443)(5,1280,328)(6,712,406)(7,
     1285,452)(8,694,95)(9,1282,323)(10,714,401)(11,1144,300)(12,60,378)(13,
     1169,446)(15,1151,290)(16,67,368)(17,684,98)(18,1277,326)(19,709,404)(20,
     691,88)(21,1159,307)(22,75,385)(23,1175,449)(24,34,31)(25,1161,302)(26,
     77,380)(27,699,105)(28,1283,329)(29,715,407)(30,701,100)(32,1156,305)(33,
     72,383)(35,696,103)(36,1165,313)(37,81,391)(38,1176,450)(39,49,46)(40,
     1167,308)(41,83,386)(42,705,111)(43,1284,330)(44,716,408)(45,707,106)(47,
     1162,311)(48,78,389)(50,702,109)(51,54,56)(52,1168,314)(53,84,392)(55,
     708,112)(57,1235,299)(58,396,377)(59,1240,445)(61,1237,288)(62,398,366)
     (63,775,97)(64,1291,325)(65,780,403)(66,777,86)(68,1232,292)(69,393,370)
     (71,772,90)(73,1238,304)(74,399,382)(76,778,102)(79,1239,310)(80,400,388)
     (82,779,108)(85,1150,764)(87,1173,785)(89,1155,759)(91,690,722)(92,1281,
     768)(93,713,781)(94,695,717)(96,1147,762)(99,687,720)(101,1160,765)(104,
     700,723)(107,1166,766)(110,706,724)(113,374,693)(114,1236,761)(115,397,
     774)(116,379,682)(117,776,719)(118,371,686)(119,384,698)(120,390,704)
     (121,1189,337)(122,152,415)(123,1194,453)(124,134,131)(125,1191,332)(126,
     154,410)(127,729,162)(128,1287,341)(129,734,419)(130,731,157)(132,1186,
     335)(133,149,413)(135,726,160)(136,139,141)(137,1192,338)(138,155,416)
     (140,732,163)(142,145,147)(143,1193,339)(144,156,417)(146,733,164)(150,
     1242,334)(151,418,412)(153,782,159)(158,1190,769)(161,730,735)(165,414,
     728)(166,1199,347)(167,197,425)(168,1204,454)(169,179,176)(170,1201,342)
     (171,199,420)(172,739,207)(173,1288,351)(174,744,429)(175,741,202)(177,
     1196,345)(178,194,423)(180,736,205)(181,184,186)(182,1202,348)(183,200,
     426)(185,742,208)(187,190,192)(188,1203,349)(189,201,427)(191,743,209)
     (195,1243,344)(196,428,422)(198,783,204)(203,1200,770)(206,740,745)(210,
     424,738)(211,214,216)(212,1206,352)(213,219,430)(215,746,220)(221,1264,
     539)(222,592,552)(223,1269,560)(224,574,466)(225,1266,534)(226,594,547)
     (227,804,497)(228,1293,543)(229,809,556)(230,806,492)(231,564,469)(232,
     1261,537)(233,589,550)(234,571,459)(235,801,495)(236,579,476)(237,1267,
     540)(238,595,553)(239,581,471)(240,807,498)(241,576,474)(242,585,482)
     (243,1268,541)(244,596,554)(245,587,477)(246,808,499)(247,582,480)(248,
     588,483)(249,655,468)(250,1275,536)(251,660,549)(252,657,457)(253,815,
     494)(254,652,461)(255,658,473)(256,659,479)(257,570,791)(258,1265,799)
     (259,593,800)(260,575,786)(261,805,795)(262,567,789)(263,580,792)(264,
     586,793)(265,656,788)(266,609,506)(267,1271,544)(268,614,557)(269,611,
     501)(270,811,510)(271,606,504)(272,612,507)(273,613,508)(274,662,503)
     (275,610,796)(276,619,516)(277,1272,545)(278,624,558)(279,621,511)(280,
     812,520)(281,616,514)(282,622,517)(283,623,518)(284,663,513)(285,620,797)
     (286,626,521)(287,1145,1224)(289,1170,1245)(291,1152,1219)(293,685,1182)
     (294,1278,1228)(295,710,1241)(296,692,1177)(298,1141,1222)(301,681,1180)
     (303,1157,1225)(306,697,1183)(309,1163,1226)(312,703,1184)(315,369,1153)
     (316,1233,1221)(317,394,1234)(318,376,1142)(319,773,1179)(320,365,1146)
     (321,381,1158)(322,387,1164)(324,1148,1290)(327,688,1286)(331,372,1279)
     (333,1187,1229)(336,727,1195)(340,411,1188)(343,1197,1230)(346,737,1205)
     (350,421,1198)(353,565,1251)(354,1262,1259)(355,590,1260)(356,572,1246)
     (357,802,1255)(358,561,1249)(359,577,1252)(360,583,1253)(361,653,1248)
     (362,568,1292)(363,607,1256)(364,617,1257)(367,1171,451)(373,711,409)
     (402,1149,767)(405,689,725)(431,566,489)(432,1263,542)(433,591,555)(434,
     573,484)(435,803,500)(436,562,487)(437,578,490)(438,584,491)(439,654,486)
     (440,569,794)(441,608,509)(442,618,519)(444,1143,1227)(447,683,1185)(455,
     563,1254)(456,1210,644)(458,1215,665)(460,1212,639)(462,750,602)(463,
     1289,648)(464,755,661)(465,752,597)(467,1207,642)(470,747,600)(472,1213,
     645)(475,753,603)(478,1214,646)(481,754,604)(485,1244,641)(488,784,599)
     (493,1211,814)(496,751,810)(502,1217,649)(505,757,615)(512,1218,650)(515,
     758,625)(522,630,671)(523,1273,679)(524,635,680)(525,632,666)(526,813,
     675)(527,627,669)(528,633,672)(529,634,673)(530,664,668)(531,631,816)
     (532,637,676)(533,638,677)(535,1208,1274)(538,748,1270)(546,628,1276)
     (548,1209,647)(551,749,605)(559,629,674)(598,1250,771)(601,790,756)(636,
     670,798)(640,1247,1231)(643,787,1216)(651,667,1258)(718,1181,763)(760,
     1178,1223)(817,1965,1624)(818,1803,1637)(819,1970,1645)(820,1785,1551)
     (821,1967,1619)(822,1805,1632)(823,1911,1582)(824,1979,1628)(825,1916,
     1641)(826,1913,1577)(827,1775,1554)(828,1962,1622)(829,1800,1635)(830,
     1782,1544)(831,1908,1580)(832,1790,1561)(833,1968,1625)(834,1806,1638)
     (835,1792,1556)(836,1914,1583)(837,1787,1559)(838,1796,1567)(839,1969,
     1626)(840,1807,1639)(841,1798,1562)(842,1915,1584)(843,1793,1565)(844,
     1799,1568)(845,1866,1553)(846,1976,1621)(847,1871,1634)(848,1868,1542)
     (849,1922,1579)(850,1863,1546)(851,1869,1558)(852,1870,1564)(853,1781,
     1682)(854,1966,1690)(855,1804,1691)(856,1786,1677)(857,1912,1686)(858,
     1778,1680)(859,1791,1683)(860,1797,1684)(861,1867,1679)(862,1820,1591)
     (863,1972,1629)(864,1825,1642)(865,1822,1586)(866,1918,1595)(867,1817,
     1589)(868,1823,1592)(869,1824,1593)(870,1873,1588)(871,1821,1687)(872,
     1830,1601)(873,1973,1630)(874,1835,1643)(875,1832,1596)(876,1919,1605)
     (877,1827,1599)(878,1833,1602)(879,1834,1603)(880,1874,1598)(881,1831,
     1688)(882,1837,1606)(883,1895,1651)(884,1978,1659)(885,1900,1660)(886,
     1897,1646)(887,1924,1655)(888,1892,1649)(889,1898,1652)(890,1899,1653)
     (891,1906,1648)(892,1896,1692)(893,1902,1656)(894,1903,1657)(895,1776,
     1736)(896,1963,1744)(897,1801,1745)(898,1783,1731)(899,1909,1740)(900,
     1772,1734)(901,1788,1737)(902,1794,1738)(903,1864,1733)(904,1779,1748)
     (905,1818,1741)(906,1828,1742)(907,1893,1746)(908,1777,1574)(909,1964,
     1627)(910,1802,1640)(911,1784,1569)(912,1910,1585)(913,1773,1572)(914,
     1789,1575)(915,1795,1576)(916,1865,1571)(917,1780,1685)(918,1819,1594)
     (919,1829,1604)(920,1894,1654)(921,1774,1739)(922,1841,1666)(923,1974,
     1674)(924,1846,1675)(925,1843,1661)(926,1920,1670)(927,1838,1664)(928,
     1844,1667)(929,1845,1668)(930,1875,1663)(931,1842,1693)(932,1848,1671)
     (933,1849,1672)(934,1904,1676)(935,1839,1747)(936,1840,1669)(937,1880,
     1612)(938,1977,1631)(939,1885,1644)(940,1882,1607)(941,1923,1616)(942,
     1877,1610)(943,1883,1613)(944,1884,1614)(945,1891,1609)(946,1881,1689)
     (947,1887,1617)(948,1888,1618)(949,1907,1658)(950,1878,1743)(951,1879,
     1615)(952,1889,1673)(953,1811,1555)(954,1971,1623)(955,1816,1636)(956,
     1813,1547)(957,1917,1581)(958,1808,1550)(959,1814,1560)(960,1815,1566)
     (961,1872,1549)(962,1812,1681)(963,1826,1590)(964,1836,1600)(965,1901,
     1650)(966,1809,1735)(967,1810,1573)(968,1847,1665)(969,1886,1611)(970,
     1315,1053)(971,1001,1066)(972,1320,1074)(973,983,980)(974,1317,1048)(975,
     1003,1061)(976,1109,1011)(977,1329,1057)(978,1114,1070)(979,1111,1006)
     (981,1312,1051)(982,998,1064)(984,1106,1009)(985,988,990)(986,1318,1054)
     (987,1004,1067)(989,1112,1012)(991,994,996)(992,1319,1055)(993,1005,1068)
     (995,1113,1013)(999,1326,1050)(1000,1069,1063)(1002,1120,1008)(1007,1316,
     1119)(1010,1110,1115)(1014,1065,1108)(1015,1018,1020)(1016,1322,1058)
     (1017,1023,1071)(1019,1116,1024)(1025,1028,1030)(1026,1323,1059)(1027,
     1033,1072)(1029,1117,1034)(1036,1093,1080)(1037,1328,1088)(1038,1098,
     1089)(1039,1095,1075)(1040,1122,1084)(1041,1090,1078)(1042,1096,1081)
     (1043,1097,1082)(1044,1104,1077)(1045,1094,1121)(1046,1100,1085)(1047,
     1101,1086)(1049,1313,1325)(1052,1107,1321)(1056,1062,1314)(1060,1091,
     1327)(1073,1092,1083)(1076,1324,1103)(1079,1118,1099)(1087,1102,1105)
     (1123,1946,1717)(1124,1981,1725)(1125,1951,1726)(1126,1948,1712)(1127,
     1960,1721)(1128,1943,1715)(1129,1949,1718)(1130,1950,1719)(1131,1957,
     1714)(1132,1947,1729)(1133,1953,1722)(1134,1954,1723)(1135,1959,1727)
     (1136,1944,1750)(1137,1945,1720)(1138,1955,1728)(1139,1958,1724)(1140,
     1952,1716)(1294,1853,1552)(1295,1975,1620)(1296,1858,1633)(1297,1855,
     1541)(1298,1921,1578)(1299,1850,1545)(1300,1856,1557)(1301,1857,1563)
     (1302,1876,1543)(1303,1854,1678)(1304,1860,1587)(1305,1861,1597)(1306,
     1905,1647)(1307,1851,1732)(1308,1852,1570)(1309,1862,1662)(1310,1890,
     1608)(1311,1859,1548)(1330,1956,1713)(1331,1524,1414)(1332,1362,1427)
     (1333,1529,1435)(1334,1344,1341)(1335,1526,1409)(1336,1364,1422)(1337,
     1470,1372)(1338,1538,1418)(1339,1475,1431)(1340,1472,1367)(1342,1521,
     1412)(1343,1359,1425)(1345,1467,1370)(1346,1349,1351)(1347,1527,1415)
     (1348,1365,1428)(1350,1473,1373)(1352,1355,1357)(1353,1528,1416)(1354,
     1366,1429)(1356,1474,1374)(1360,1535,1411)(1361,1430,1424)(1363,1481,
     1369)(1368,1525,1480)(1371,1471,1476)(1375,1426,1469)(1376,1379,1381)
     (1377,1531,1419)(1378,1384,1432)(1380,1477,1385)(1386,1389,1391)(1387,
     1532,1420)(1388,1394,1433)(1390,1478,1395)(1397,1454,1441)(1398,1537,
     1449)(1399,1459,1450)(1400,1456,1436)(1401,1483,1445)(1402,1451,1439)
     (1403,1457,1442)(1404,1458,1443)(1405,1465,1438)(1406,1455,1482)(1407,
     1461,1446)(1408,1462,1447)(1410,1522,1534)(1413,1468,1530)(1417,1423,
     1523)(1421,1452,1536)(1434,1453,1444)(1437,1533,1464)(1440,1479,1460)
     (1448,1463,1466)(1484,1985,1756)(1485,2002,1764)(1486,1990,1765)(1487,
     1987,1751)(1488,1999,1760)(1489,1982,1754)(1490,1988,1757)(1491,1989,
     1758)(1492,1996,1753)(1493,1986,1768)(1494,1992,1761)(1495,1993,1762)
     (1496,1998,1766)(1497,1983,1771)(1498,1984,1759)(1499,1994,1767)(1500,
     1997,1763)(1501,1991,1755)(1502,1505,1507)(1503,1540,1515)(1504,1510,
     1516)(1506,1519,1511)(1514,1518,1517)(1520,2001,1770)(1539,1995,1752)
     (1694,1928,2008)(1695,1980,2016)(1696,1933,2017)(1697,1930,2003)(1698,
     1942,2012)(1699,1925,2006)(1700,1931,2009)(1701,1932,2010)(1702,1939,
     2005)(1703,1929,2020)(1704,1935,2013)(1705,1936,2014)(1706,1941,2018)
     (1707,1926,2023)(1708,1927,2011)(1709,1937,2019)(1710,1940,2015)(1711,
     1934,2007)(1730,1961,2022)(1749,1938,2004)(1769,2000,2024);