b := (  1,158,104)(  2, 23,125)(  3, 24, 34)(  4, 61, 85)(  5, 31,115)
(  6,137,132)(  7, 58,110)(  8,  9,109)( 10,154,152)( 11, 33, 76)( 12, 96,122)
( 13, 53,107)( 14,138,153)( 15, 71, 77)( 16,135, 65)( 17, 69,120)( 18,118,119)
( 19, 79, 97)( 20, 74,114)( 21, 80,144)( 22, 87, 39)( 25, 73,156)( 26, 75, 29)
( 27, 55, 63)( 28, 86, 91)( 30, 48,108)( 32, 82, 89)( 35,136, 78)( 36, 41, 99)
( 37,140,149)( 38, 45, 95)( 40,105, 88)( 42, 66,123)( 43,133, 59)( 44,155, 67)
( 46,126, 57)( 47,106,139)( 49,147, 92)( 50, 56,112)( 51, 94,116)( 52,101, 98)
( 54,102,127)( 60,128, 83)( 62,148,111)( 64, 72,100)( 68,150, 84)( 70,157, 81)
( 90,134,143)( 93,103,124)(113,130,145)(117,131,129)(121,151,146);