z1 := (1,3,4)(2,5,6)(7,11,12)(8,13,14)(9,15,16)(10,17,18)(19,25,26)(20,27,28)
     (21,29,30)(22,31,32)(23,33,34)(24,35,36)(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)(73,87,88)(74,89,90)(75,91,92)(76,93,94)(77,95,78)
     (79,96,97)(80,98,99)(81,100,82)(83,101,102)(84,103,104)(85,105,106)(86,
     107,108)(109,129,116)(110,130,131)(111,114,132)(112,133,113)(115,134,135)
     (117,136,137)(118,138,139)(119,140,141)(120,142,143)(121,144,128)(122,
     145,146)(123,126,147)(124,148,125)(127,149,150)(151,157,158)(152,159,153)
     (154,160,155)(156,161,162)(163,167,164)(165,168,166);