b := (  1, 70,162)(  2, 49,141)(  3,153,140)(  4,123, 83)(  5,164, 38)
(  6,181,103)(  7,  9,166)(  8,102, 82)( 10,154,174)( 11, 66, 98)( 12,122, 16)
( 13,136, 55)( 14, 96,171)( 15, 89, 19)( 17, 40,115)( 18,156, 75)( 20,113,145)
( 21, 37, 57)( 22, 24, 45)( 23,129,109)( 25,108, 30)( 26,173, 47)( 27,128, 88)
( 28, 71, 58)( 29, 43,157)( 31,172,175)( 32,178,161)( 33,179, 50)( 34,100,170)
( 35, 92,127)( 36, 39,180)( 41,111,177)( 42, 60,155)( 44, 51,147)( 46, 52, 61)
( 48,101, 95)( 53,137,112)( 54,168,182)( 56,151,169)( 59,139, 81)( 62, 73, 86)
( 63,144,134)( 64,160,167)( 65, 91,121)( 67,148, 77)( 68,106, 79)( 69,131,124)
( 72,152,130)( 74,158, 99)( 76, 93, 94)( 78, 97,126)( 80,142, 87)( 84,119,176)
( 85,114,133)( 90,120,146)(105,143,132)(110,163,116)(117,118,135)(125,138,149)
(150,159,165);