z1 := (1,2,4,5)(3,9,11,12)(6,16,13,17)(7,19,14,21)(8,22,15,23)(10,27,18,28)
     (20,35,24,36)(25,41,29,42)(26,43,30,44)(31,49,33,51)(32,52,34,53)(37,59,
     39,61)(38,62,40,63)(45,69,47,71)(46,72,48,73)(50,64,54,60)(55,81,57,83)
     (56,84,58,85)(65,93,66,94)(67,95,68,96)(70,98,74,99)(75,104,77,102)(76,
     106,78,107)(79,109,80,110)(82,112,86,113)(87,118,89,116)(88,120,90,121)
     (91,123,92,124)(97,129,100,130)(101,135,103,137)(105,139,108,140)(111,
     145,114,146)(115,147,117,149)(119,151,122,152)(125,157,126,158)(127,159,
     128,160)(131,165,133,166)(132,167,134,168)(136,171,138,172)(141,154,142,
     153)(143,175,144,176)(148,183,150,184)(155,187,156,188)(161,197,163,198)
     (162,199,164,200)(169,206,173,204)(170,192,174,190)(177,215,179,216)(178,
     205,180,203)(181,201,185,202)(182,194,186,196)(189,223,191,224)(193,213,
     195,214)(207,235,208,236)(209,219,211,221)(210,231,212,232)(217,230,218,
     229)(220,234,222,233)(225,240,226,239)(227,238,228,237);