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)(30,46)(31,47)(32,48)(33,49)(34,50)(35,51)(36,52)
     (37,53)(38,54)(39,55)(40,56)(41,57)(42,58)(43,59)(44,60)(45,61)(62,94)
     (63,95)(64,96)(65,97)(66,98)(67,99)(68,100)(69,101)(70,102)(71,103)(72,
     104)(73,105)(74,106)(75,107)(76,108)(77,109)(78,110)(79,111)(80,112)(81,
     113)(82,114)(83,115)(84,116)(85,117)(86,118)(87,119)(88,120)(89,121)(90,
     122)(91,123)(92,124)(93,125)(126,190)(127,136)(128,191)(129,163)(130,192)
     (131,193)(132,176)(133,194)(134,195)(135,196)(137,197)(138,198)(139,183)
     (140,199)(141,148)(142,200)(143,201)(144,202)(145,150)(146,158)(147,203)
     (149,204)(151,205)(152,186)(153,206)(154,207)(155,208)(156,209)(157,169)
     (159,210)(160,211)(161,212)(162,213)(164,214)(165,170)(166,215)(167,174)
     (168,216)(171,217)(172,218)(173,219)(175,220)(177,221)(178,222)(179,188)
     (180,223)(181,224)(182,225)(184,226)(185,227)(187,228)(189,229)(230,274)
     (231,269)(232,275)(233,271)(234,276)(235,277)(236,278)(237,273)(238,279)
     (239,280)(240,281)(241,251)(243,282)(244,283)(246,284)(247,285)(248,286)
     (249,255)(250,287)(252,261)(253,288)(254,289)(256,290)(257,291)(258,292)
     (259,263)(260,293)(262,294)(264,295)(266,296)(268,297)(270,298)(272,299)
     (301,313)(302,314)(303,315)(304,316)(305,317)(306,318)(307,319)(308,320)
     (309,321)(310,322)(311,323)(312,324)(325,327)(326,331)(328,332)(329,333)
     (330,334)(335,336);