z1 := (2,3,4)(5,7,8)(6,9,10)(11,15,16)(12,17,18)(13,19,20)(14,21,22)(23,30,31)
     (24,32,33)(25,34,28)(26,35,36)(27,37,38)(29,39,40)(41,51,52)(42,53,50)
     (43,54,55)(44,56,57)(45,58,59)(46,60,47)(48,61,62)(49,63,64)(65,79,73)
     (66,75,80)(67,81,82)(68,83,78)(69,84,70)(71,85,77)(72,76,86)(74,87,88)
     (89,92,99)(90,100,91)(94,97,101)(95,102,98)(103,107,105)(104,106,108)
     (109,111,110);