z1 := (2,3,6,4)(7,9,14,10)(8,11,17,12)(13,19,30,20)(15,22,32,23)(16,24,35,25)
     (18,27,37,28)(21,26)(29,39,56,40)(31,42,60,43)(33,45,64,46)(34,47,65,48)
     (36,50,69,51)(38,53,73,54)(41,44,62,58)(49,52,71,67)(55,75,100,76)(57,78,
     104,79)(59,81,92,70)(61,83,68,84)(63,86,66,87)(72,94,123,95)(74,97,127,
     98)(77,102,134,103)(80,106,85,107)(82,109,141,110)(88,113,145,114)(89,
     115,148,116)(90,117,93,118)(91,119,152,120)(96,124,155,125)(99,129,161,
     130)(101,132)(105,136,171,137)(108,139,121,140)(112,142,174,143)(122,151,
     188,153)(126,157)(128,159,197,160)(131,163,170,164)(133,166,146,167)(135,
     168,206,169)(138,172,201,173)(144,178,213,179)(147,181,156,182)(149,184,
     209,185)(150,186,218,187)(154,191,210,192)(158,194,190,195)(162,199,228,
     200)(165,202,231,203)(175,211,180,176)(177,183,216,189)(193,221,240,222)
     (196,223,243,224)(198,226)(204,205,207,232)(208,233,257,234)(212,235)
     (214,236,220,215)(217,237)(219,238,263,239)(225,245)(227,247,275,248)
     (229,250,279,251)(230,252,255,253)(241,266,260,267)(242,268,289,269)(244,
     271,291,272)(246,262,258,273)(249,277,294,278)(254,283,295,284)(256,264)
     (259,261,285,282)(265,286,293,276)(270,274,292,290)(281,287);