z1 := (2,6)(3,5)(4,12)(7,20)(8,19)(9,17)(10,15)(11,26)(13,30)(14,28)(16,32)
     (18,38)(21,45)(22,43)(23,41)(24,36)(27,50)(29,52)(31,55)(33,61)(34,60)
     (35,58)(37,68)(39,73)(40,71)(42,76)(44,82)(46,85)(47,80)(48,66)(49,86)
     (51,89)(53,92)(54,93)(56,57)(59,103)(62,110)(63,108)(64,106)(65,101)(67,
     115)(69,119)(70,120)(72,125)(74,128)(75,123)(77,135)(78,134)(79,132)(81,
     141)(83,146)(84,144)(87,151)(88,99)(90,156)(91,158)(94,165)(95,164)(96,
     100)(97,168)(98,169)(102,176)(104,181)(105,179)(107,184)(109,190)(111,
     193)(112,188)(113,174)(114,195)(116,198)(117,197)(121,205)(122,204)(124,
     208)(126,211)(127,212)(129,216)(130,214)(131,209)(133,222)(136,229)(137,
     227)(138,225)(139,220)(140,232)(142,236)(143,237)(145,242)(147,245)(148,
     240)(149,248)(150,172)(152,253)(153,254)(154,255)(155,173)(157,260)(159,
     262)(160,263)(161,265)(162,251)(166,273)(167,274)(170,280)(171,278)(175,
     284)(177,288)(178,289)(180,293)(182,296)(183,292)(185,303)(186,302)(187,
     300)(189,310)(191,315)(192,313)(194,308)(196,318)(199,322)(200,323)(201,
     324)(202,326)(203,328)(206,333)(210,335)(215,339)(217,343)(218,344)(219,
     334)(221,348)(223,353)(224,351)(226,356)(228,361)(230,364)(231,359)(233,
     367)(234,301)(235,369)(238,375)(239,374)(241,379)(243,383)(244,384)(246,
     389)(247,387)(249,392)(250,393)(252,270)(256,401)(257,402)(258,382)(261,
     350)(264,410)(266,412)(267,366)(268,390)(269,332)(271,414)(272,417)(275,
     422)(276,424)(277,426)(279,409)(281,434)(282,430)(283,373)(285,436)(286,
     365)(287,437)(290,307)(291,377)(294,444)(295,445)(297,449)(298,448)(304,
     454)(305,453)(306,452)(309,459)(311,463)(312,407)(314,468)(316,471)(317,
     466)(319,476)(320,474)(321,478)(325,337)(327,486)(329,346)(330,488)(331,
     342)(336,495)(338,496)(340,467)(341,499)(345,503)(347,431)(349,508)(352,
     399)(354,512)(355,433)(357,517)(358,516)(360,521)(363,524)(368,532)(370,
     533)(371,534)(372,536)(376,484)(378,539)(380,541)(381,542)(385,547)(386,
     546)(391,400)(394,411)(395,493)(396,556)(397,405)(398,559)(403,489)(404,
     565)(406,568)(408,570)(413,481)(415,579)(416,577)(418,567)(420,583)(421,
     585)(423,589)(425,591)(427,592)(428,509)(432,564)(435,537)(438,451)(440,
     597)(441,497)(442,457)(446,601)(447,600)(450,605)(455,606)(456,550)(458,
     588)(460,610)(461,563)(462,611)(464,580)(465,554)(469,617)(470,618)(472,
     614)(473,621)(475,625)(477,483)(479,609)(480,498)(482,630)(485,491)(487,
     634)(490,613)(492,639)(494,641)(500,645)(501,527)(502,646)(504,642)(505,
     648)(506,578)(507,555)(510,651)(511,562)(513,599)(514,654)(515,657)(518,
     659)(519,572)(520,661)(522,526)(523,626)(525,598)(528,643)(529,664)(530,
     665)(535,666)(538,604)(540,671)(543,674)(544,675)(545,640)(548,677)(549,
     656)(551,637)(552,676)(557,682)(558,679)(560,683)(561,660)(566,647)(569,
     619)(571,681)(573,632)(574,688)(575,689)(576,638)(581,582)(584,691)(586,
     658)(587,678)(590,593)(595,686)(596,652)(602,668)(607,670)(608,697)(612,
     701)(615,684)(616,704)(620,707)(622,700)(623,712)(627,636)(628,699)(629,
     653)(631,695)(633,650)(635,709)(644,694)(649,714)(655,696)(662,663)(669,
     715)(672,706)(673,690)(680,708)(685,702)(692,703)(693,713)(698,716)(705,
     717)(710,720);