z1 := (2,4)(3,6)(5,10)(7,14)(8,15)(11,20)(13,22)(16,27)(17,29)(18,30)(21,34)
     (23,37)(24,38)(25,39)(36,51)(40,58)(41,59)(45,64)(47,67)(48,69)(53,75)
     (55,78)(60,86)(61,88)(62,89)(63,91)(65,94)(66,96)(70,101)(71,103)(74,106)
     (76,110)(77,111)(79,114)(80,115)(81,117)(82,118)(83,120)(84,122)(85,124)
     (87,128)(90,133)(92,136)(93,138)(97,143)(98,145)(99,147)(100,149)(102,
     153)(104,155)(105,157)(107,160)(108,161)(109,163)(113,169)(116,174)(123,
     182)(125,179)(126,186)(129,141)(131,193)(134,197)(137,202)(139,203)(140,
     205)(142,172)(144,211)(146,214)(148,191)(150,219)(152,221)(154,224)(156,
     226)(159,168)(162,176)(164,236)(166,238)(167,228)(170,243)(171,245)(180,
     256)(183,260)(187,229)(188,265)(189,266)(192,239)(194,271)(195,272)(196,
     274)(198,275)(199,277)(200,278)(201,279)(204,284)(206,287)(208,289)(209,
     290)(210,292)(212,295)(216,299)(217,300)(218,302)(220,305)(222,307)(223,
     308)(231,315)(233,317)(235,319)(237,322)(240,325)(242,327)(244,330)(246,
     332)(247,333)(248,335)(249,336)(250,338)(251,340)(252,285)(253,342)(254,
     343)(255,329)(257,347)(258,349)(259,350)(261,352)(262,353)(264,355)(267,
     360)(269,361)(270,363)(273,367)(276,304)(280,376)(281,377)(282,379)(283,
     381)(286,386)(288,390)(291,395)(294,306)(296,402)(298,403)(303,411)(309,
     419)(310,420)(311,421)(312,423)(313,425)(314,427)(316,428)(318,430)(320,
     433)(321,434)(323,391)(324,436)(326,438)(328,440)(331,444)(337,406)(339,
     455)(341,458)(344,463)(345,464)(348,468)(357,475)(368,483)(369,484)(370,
     485)(371,486)(373,488)(374,490)(375,492)(382,501)(384,456)(385,503)(392,
     508)(394,511)(396,514)(398,424)(399,516)(400,517)(401,519)(404,523)(405,
     524)(408,527)(409,528)(412,532)(414,534)(416,472)(422,542)(431,549)(432,
     550)(435,453)(437,554)(439,558)(442,561)(445,563)(446,540)(449,566)(452,
     567)(454,569)(457,574)(460,578)(461,580)(465,586)(466,587)(469,592)(471,
     593)(474,568)(476,515)(477,597)(478,599)(479,600)(480,601)(482,603)(487,
     512)(496,612)(497,584)(499,614)(502,615)(505,571)(506,619)(507,596)(509,
     624)(513,628)(518,632)(520,635)(522,637)(525,640)(526,535)(529,533)(531,
     644)(536,647)(539,649)(541,650)(543,646)(546,654)(547,606)(548,656)(552,
     660)(555,663)(556,664)(557,652)(564,570)(565,668)(572,617)(573,677)(575,
     680)(576,681)(577,669)(582,670)(583,684)(588,687)(589,659)(590,683)(591,
     689)(594,626)(598,610)(602,697)(604,695)(605,696)(607,682)(608,655)(609,
     701)(613,700)(616,702)(622,673)(623,686)(625,688)(627,642)(633,712)(636,
     704)(639,718)(643,720)(648,690)(651,667)(653,727)(657,728)(661,730)(662,
     724)(671,736)(693,746)(694,711)(703,749)(706,743)(715,745)(722,741)(731,
     748)(732,752)(733,744);