z1 := (1,2)(3,7)(4,8)(5,9)(6,10)(11,19)(12,20)(13,21)(14,22)(15,23)(16,24)(17,
     25)(18,26)(27,43)(28,44)(29,45)(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)(59,90)(60,91)(61,92)
     (62,93)(63,94)(64,80)(65,95)(66,96)(67,97)(68,98)(69,85)(70,99)(71,100)
     (72,101)(73,102)(74,75)(76,103)(77,104)(78,105)(79,106)(81,107)(82,108)
     (83,109)(84,110)(86,111)(87,112)(88,113)(89,114)(115,151)(116,152)(117,
     153)(118,154)(119,155)(120,156)(121,157)(122,158)(123,159)(124,160)(125,
     161)(126,162)(127,163)(128,164)(129,165)(130,166)(131,167)(132,168)(133,
     169)(134,170)(135,171)(136,172)(137,173)(138,174)(139,175)(140,176)(141,
     177)(142,178)(143,179)(144,180)(145,181)(146,182)(147,183)(148,184)(149,
     185)(150,186)(187,235)(188,231)(189,236)(190,237)(191,238)(192,239)(193,
     234)(194,240)(195,241)(196,221)(197,220)(198,242)(199,243)(200,244)(201,
     245)(202,246)(203,228)(204,227)(205,247)(206,248)(207,212)(208,249)(209,
     250)(210,217)(211,251)(213,252)(214,253)(215,254)(216,255)(218,256)(219,
     257)(222,258)(223,259)(224,260)(225,261)(226,262)(229,263)(230,264)(232,
     265)(233,266)(267,292)(268,295)(269,296)(270,297)(271,289)(272,286)(273,
     298)(274,299)(275,285)(276,300)(277,301)(278,281)(279,302)(280,294)(282,
     303)(283,304)(284,305)(287,306)(288,307)(290,308)(291,309)(293,310)(311,
     319)(312,320)(313,321)(314,322)(315,323)(316,324)(317,325)(318,326)(327,
     331)(328,332)(329,333)(330,334)(335,336);