b11 := (1,2)(3,5)(4,6)(7,11)(8,12)(9,13)(10,14)(15,23)(16,24)(17,25)(18,19)(20,
     26)(21,27)(22,28)(29,41)(30,42)(31,43)(32,44)(33,45)(34,46)(35,47)(36,48)
     (37,49)(38,50)(39,51)(40,52)(53,74)(54,75)(55,76)(56,77)(57,78)(58,79)
     (59,80)(61,81)(62,82)(63,83)(64,84)(65,85)(67,86)(68,87)(69,88)(70,89)
     (71,90)(72,91)(73,92)(93,128)(94,129)(95,130)(96,104)(97,123)(98,113)(99,
     131)(100,132)(101,133)(102,134)(105,135)(106,136)(107,137)(108,122)(109,
     138)(110,139)(111,140)(112,141)(114,142)(115,143)(116,144)(117,124)(118,
     145)(119,146)(120,147)(121,148)(125,149)(126,150)(127,151)(152,196)(153,
     197)(154,198)(155,174)(156,199)(157,200)(158,201)(159,202)(160,203)(161,
     204)(163,205)(164,206)(165,207)(166,208)(167,209)(168,210)(169,172)(170,
     211)(171,212)(173,192)(175,178)(176,213)(177,214)(179,215)(180,216)(181,
     217)(182,218)(183,219)(184,220)(186,221)(187,222)(188,223)(189,224)(190,
     225)(191,226)(193,227)(194,228)(195,229)(230,267)(231,250)(232,237)(233,
     258)(234,252)(235,268)(238,257)(240,263)(241,249)(242,269)(243,247)(244,
     270)(245,271)(246,260)(248,265)(251,254)(253,272)(255,273)(256,264)(262,
     274)(266,275)(276,278)(277,282)(279,280)(281,283)(284,285);