z1 := (1,2,5,3)(4,7,13,8)(6,10,18,11)(9,15,12,16)(14,21,33,22)(17,25,40,26)
     (19,28,45,29)(20,30,47,31)(23,35,41,36)(24,37,54,38)(27,42,58,43)(32,48,
     62,49)(34,50,44,51)(39,56,71,57)(46,59,73,60)(52,66,77,65)(53,67,76,64)
     (55,68,63,69)(61,74)(70,81,86,75)(72,83,93,82)(79,88,100,89)(80,90,102,
     91)(84,94,106,95)(85,96,87,97)(92,103,113,104)(98,108)(99,109,120,110)
     (101,111,121,112)(105,114,122,115)(107,116,123,117)(118,125,124,126);