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