b := (1,60)(2,55,65,66)(3,5,62,63)(4,69,64,57)(6,26,45,75)(7,43,42,9)(8,
77,44,29)(10,49)(11,35)(13,70)(14,84,85,15)(16,32,83,39)(17,40,82,
30)(18,21,25,24)(19,79,23,52)(20,50,22,80)(27,74,76,28)(31,33,38,
41)(36,47)(37,73)(46,72)(51,81,78,53)(54,67,68,56)(58,59);