z1 := (2,4)(3,5)(6,10)(7,11)(8,12)(13,19)(14,20)(15,21)(16,22)(17,23)(18,24)
     (25,37)(26,38)(27,39)(28,40)(29,41)(30,42)(31,43)(32,44)(33,45)(34,46)
     (35,47)(36,48)(49,73)(50,74)(51,75)(52,76)(53,77)(54,70)(55,78)(56,69)
     (57,79)(58,80)(59,81)(60,82)(61,83)(62,84)(63,85)(64,86)(65,87)(66,88)
     (67,89)(68,90)(71,91)(72,92)(93,133)(94,134)(95,135)(96,136)(97,137)(98,
     127)(99,138)(100,139)(101,140)(102,141)(103,142)(104,143)(105,115)(106,
     144)(107,145)(108,130)(109,146)(110,126)(111,147)(112,148)(113,149)(114,
     150)(116,151)(117,152)(118,153)(119,154)(120,155)(121,156)(122,157)(123,
     158)(124,159)(125,160)(128,161)(129,162)(131,163)(132,164)(165,223)(166,
     224)(167,225)(168,226)(169,227)(171,228)(172,189)(173,229)(174,230)(175,
     231)(176,187)(177,232)(178,233)(179,234)(180,235)(181,236)(182,237)(183,
     238)(184,239)(185,240)(186,241)(188,242)(190,243)(191,244)(192,245)(193,
     246)(194,247)(195,248)(196,249)(197,250)(198,251)(199,252)(200,253)(201,
     254)(202,255)(203,256)(204,257)(205,258)(206,259)(207,260)(208,261)(209,
     262)(210,263)(211,264)(212,265)(213,266)(214,218)(215,267)(216,268)(217,
     269)(219,270)(220,271)(221,272)(222,273)(274,323)(276,353)(277,355)(278,
     306)(279,317)(280,299)(282,303)(283,297)(284,338)(285,356)(287,318)(288,
     357)(289,358)(290,359)(291,360)(293,346)(295,361)(296,310)(298,362)(300,
     363)(301,364)(302,305)(304,365)(307,366)(308,367)(309,320)(311,368)(312,
     369)(313,370)(314,371)(315,372)(316,343)(319,373)(322,374)(324,375)(325,
     333)(326,376)(327,377)(328,378)(329,379)(330,380)(331,337)(332,381)(334,
     382)(335,383)(336,384)(339,385)(340,386)(341,387)(342,388)(344,389)(345,
     390)(347,350)(348,391)(349,392)(351,393)(352,394)(354,395)(396,438)(397,
     408)(398,447)(399,420)(400,457)(401,433)(402,450)(403,415)(404,437)(405,
     458)(406,412)(407,443)(409,459)(410,441)(411,423)(413,460)(414,452)(416,
     426)(417,427)(418,461)(419,428)(421,462)(422,463)(424,454)(425,464)(429,
     465)(430,466)(431,467)(432,440)(434,468)(436,469)(439,470)(442,471)(444,
     456)(445,472)(448,473)(449,474)(451,475)(476,489)(477,479)(478,493)(480,
     485)(481,484)(482,488)(483,491)(486,494)(490,492);