z1 := (2,4)(3,5)(6,10)(7,11)(8,12)(9,13)(14,22)(15,23)(16,24)(17,25)(18,26)
     (19,27)(20,28)(21,29)(30,45)(31,46)(32,47)(33,48)(34,49)(36,50)(37,51)
     (38,52)(39,53)(41,54)(42,55)(43,56)(44,57)(58,76)(59,77)(60,78)(61,79)
     (62,80)(63,81)(64,82)(65,83)(66,84)(67,85)(68,86)(69,87)(70,88)(71,89)
     (72,90)(73,91)(74,92)(75,93)(94,118)(95,114)(96,119)(97,120)(98,121)(99,
     122)(100,117)(101,123)(102,124)(103,104)(105,125)(106,126)(107,127)(108,
     128)(109,129)(110,111)(112,130)(113,131)(115,132)(116,133)(134,145)(135,
     148)(136,149)(137,150)(138,142)(140,151)(141,152)(143,153)(144,154)(146,
     155)(156,160)(157,161)(158,162)(159,163)(164,166)(165,167);