z1 := (2,3,6,4)(5,8,14,9)(7,11,19,12)(10,16,26,17)(13,21,32,22)(15,24,37,25)
     (18,28,42,29)(20,31)(23,34,51,35)(27,39,59,40)(30,44,66,45)(33,48,71,49)
     (36,53,78,54)(38,56,82,57)(41,61,88,62)(43,63,91,64)(46,68,83,58)(47,69,
     97,70)(50,73,103,74)(52,75,105,76)(55,79,111,80)(60,85,119,86)(65,93,130,
     94)(72,100,136,101)(77,107,146,108)(81,113,153,114)(84,117,99,118)(87,
     121,161,122)(89,124)(90,125)(92,127,167,128)(95,129,168,131)(96,132)(98,
     133,171,134)(102,135,152,138)(104,140,178,141)(106,143,181,144)(109,148,
     188,149)(110,150,191,151)(115,154,193,155)(116,156,196,157)(120,159,201,
     160)(123,162,203,163)(126,164,206,165)(137,174,219,175)(139,176,222,177)
     (142,179,225,180)(145,183,230,184)(147,186)(158,198,210,199)(166,208,232,
     209)(169,194,237,211)(170,212,250,213)(172,214,252,215)(173,216,185,217)
     (182,227,258,228)(187,233,267,234)(189,223)(190,235,247,205)(192,197,240,
     236)(195,238,271,239)(200,241)(202,243,275,244)(204,245,277,246)(207,248,
     266,231)(218,256,283,257)(220,254)(221,259,286,260)(226,261,288,262)(229,
     264,290,265)(242,273)(249,251)(253,281,293,268)(255,282,302,276)(263,274,
     300,289)(269,294,317,295)(270,272,298,296)(278,287,312,304)(279,305,325,
     306)(280,291,314,307)(284,309,313,310)(285,311,321,299)(292,315,308,316)
     (297,319,327,320)(301,322,328,318)(303,323,330,324);