z1 := (1,3,5)(2,7,8)(4,11,12)(6,15,16)(9,21,22)(10,23,24)(13,25,26)(14,27,28)
     (17,29,30)(18,31,32)(19,33,34)(20,35,36)(37,49,50)(38,51,52)(39,53,54)
     (40,55,56)(41,57,58)(42,59,60)(43,61,62)(44,63,64)(45,65,66)(46,67,68)
     (47,69,70)(48,71,72)(73,79,89)(74,80,90)(75,77,91)(76,78,92)(81,87,93)
     (82,88,94)(83,85,95)(84,86,96);