z1 := (1,2)(3,5)(4,6)(7,11)(8,13)(9,15)(10,17)(12,21)(14,25)(16,28)(18,32)(19,
     33)(20,35)(22,29)(23,39)(24,41)(26,45)(27,47)(30,51)(31,53)(34,59)(36,52)
     (37,63)(38,65)(40,48)(42,72)(43,73)(44,75)(46,79)(49,83)(50,85)(54,92)
     (55,93)(56,95)(57,97)(58,99)(60,103)(61,81)(62,105)(64,109)(66,113)(67,
     114)(68,88)(69,117)(70,118)(71,120)(74,125)(76,129)(77,130)(78,132)(80,
     136)(82,138)(84,142)(86,146)(87,147)(89,150)(90,151)(91,153)(94,158)(96,
     162)(98,165)(100,169)(101,134)(102,170)(104,174)(106,178)(107,179)(108,
     181)(110,184)(111,185)(112,187)(115,191)(116,193)(119,197)(121,201)(122,
     202)(123,203)(124,205)(126,208)(127,209)(128,140)(131,177)(133,219)(135,
     220)(137,223)(139,225)(141,227)(143,231)(144,232)(145,234)(148,239)(149,
     241)(152,246)(154,250)(155,251)(156,252)(157,254)(159,257)(160,258)(161,
     260)(163,263)(164,264)(166,247)(167,267)(168,269)(171,221)(172,273)(173,
     275)(175,279)(176,280)(180,286)(182,290)(183,291)(186,295)(188,299)(189,
     300)(190,301)(192,304)(194,307)(195,229)(196,309)(198,216)(199,313)(200,
     315)(204,322)(206,325)(207,326)(210,228)(211,330)(212,331)(213,218)(214,
     332)(215,334)(217,336)(222,342)(224,345)(226,347)(230,351)(233,310)(235,
     358)(236,359)(237,360)(238,362)(240,366)(242,369)(243,370)(244,371)(245,
     373)(248,375)(249,376)(253,382)(255,297)(256,386)(259,389)(261,392)(262,
     393)(265,397)(266,399)(268,403)(270,407)(271,363)(272,408)(274,289)(276,
     413)(277,414)(278,415)(281,380)(282,418)(283,419)(284,421)(285,423)(287,
     426)(288,349)(292,320)(293,354)(294,402)(296,432)(298,434)(302,321)(303,
     439)(305,441)(306,442)(308,445)(311,449)(312,318)(314,454)(316,456)(317,
     457)(319,458)(323,447)(324,385)(327,448)(328,388)(329,465)(333,404)(335,
     470)(337,473)(338,341)(339,475)(340,477)(343,482)(344,483)(346,486)(348,
     490)(350,471)(352,387)(353,495)(355,472)(356,361)(357,394)(364,501)(365,
     503)(367,505)(368,506)(372,484)(374,513)(377,514)(378,515)(379,516)(381,
     517)(383,395)(384,489)(390,525)(391,526)(396,529)(398,531)(400,532)(401,
     533)(405,536)(406,537)(409,446)(410,541)(411,509)(412,480)(416,549)(417,
     546)(420,523)(422,518)(424,553)(425,450)(427,556)(428,500)(429,558)(430,
     504)(431,540)(433,560)(435,502)(436,563)(437,492)(438,519)(440,550)(443,
     570)(444,508)(451,574)(452,575)(453,576)(455,578)(459,542)(460,497)(461,
     485)(462,521)(463,520)(464,491)(466,582)(467,583)(468,584)(469,585)(474,
     589)(476,528)(478,591)(479,544)(481,593)(487,599)(488,573)(493,545)(494,
     577)(496,603)(498,604)(499,564)(507,600)(510,608)(511,609)(512,610)(522,
     616)(524,557)(527,619)(530,611)(534,586)(535,613)(538,607)(539,628)(543,
     587)(547,602)(548,588)(551,634)(552,635)(554,636)(555,637)(559,639)(561,
     640)(562,641)(565,592)(566,642)(567,624)(568,643)(569,644)(571,633)(572,
     598)(579,612)(580,650)(581,652)(590,625)(594,630)(595,656)(596,651)(597,
     658)(601,659)(605,661)(606,662)(614,664)(615,665)(617,622)(618,666)(620,
     657)(621,623)(626,655)(627,654)(629,668)(631,667)(632,669)(638,646)(645,
     663)(647,671)(648,672)(649,660)(653,670);