b21 := (1,59,75,7,64)(2,84,69,93,9)(3,78,51,10,30)(4,14,20,67,8)(5,99,43,32,46)
     (6,54,89,11,90)(12,33,21,56,35)(13,58,87,49,45)(15,18,76,94,37)(16,50,88,
     79,27)(17,70,52,82,38)(19,91,41,73,62)(22,55,23,65,86)(24,61,29,98,63)
     (25,81,96,83,48)(26,68,77,100,44)(28,92,97,57,34)(31,36,72,85,47)(39,95,
     60,66,42)(40,80,74,71,53);