b11 := (2,4)(3,5)(6,10)(7,11)(8,12)(9,13)(14,22)(15,23)(16,24)(17,25)(18,26)
     (20,27)(21,28)(29,43)(30,44)(31,45)(32,46)(33,47)(34,48)(35,49)(36,50)
     (37,51)(38,52)(39,53)(40,54)(41,55)(42,56)(57,64)(58,67)(59,85)(60,62)
     (61,86)(63,81)(65,87)(66,69)(68,88)(70,74)(71,89)(72,90)(73,91)(75,92)
     (76,93)(77,79)(78,94)(80,95)(82,96)(83,97)(84,98)(99,118)(100,119)(101,
     120)(102,121)(103,122)(104,123)(105,124)(106,111)(107,115)(108,112)(109,
     125)(110,126)(113,127)(114,116)(117,128)(129,136)(130,143)(132,144)(133,
     145)(134,146)(137,147)(138,148)(139,149)(140,150)(141,151)(152,165)(153,
     159)(154,166)(155,167)(156,168)(157,169)(158,164)(161,170)(163,171)(172,
     174)(173,175);