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