b11 := (1,2)(3,5)(4,6)(7,11)(8,12)(9,13)(10,14)(15,23)(16,24)(17,25)(18,26)(19,
     27)(20,28)(21,29)(22,30)(31,42)(32,43)(33,44)(34,45)(35,46)(36,47)(37,48)
     (38,49)(39,50)(40,51)(41,52)(53,68)(54,69)(55,70)(56,71)(57,72)(58,73)
     (59,74)(60,75)(61,76)(62,77)(63,78)(64,79)(65,80)(66,81)(67,82)(83,95)
     (84,103)(85,104)(86,91)(87,105)(88,106)(89,107)(90,108)(92,93)(94,109)
     (96,110)(97,111)(98,102)(99,112)(100,113)(101,114)(115,117)(116,127)(118,
     128)(119,123)(120,129)(121,130)(122,126)(124,131)(125,132)(133,137)(134,
     136)(135,139)(138,140)(141,142)(143,144);