b11 := (1,191)(2,182)(4,81)(5,55)(6,60)(8,66)(9,272)(10,177)(11,192)(12,163)
     (14,242)(15,133)(16,107)(18,267)(19,108)(20,218)(21,198)(22,185)(23,211)
     (24,82)(25,204)(26,195)(27,132)(28,253)(29,207)(30,59)(31,179)(32,154)
     (33,264)(34,152)(35,92)(36,189)(37,217)(38,197)(39,85)(40,156)(42,184)
     (43,102)(44,50)(45,216)(46,99)(47,181)(49,199)(51,111)(53,158)(54,236)
     (56,210)(58,103)(61,263)(63,119)(64,138)(65,127)(67,105)(68,137)(70,125)
     (71,144)(72,219)(73,261)(75,175)(77,269)(78,237)(79,268)(83,232)(84,256)
     (86,104)(87,95)(89,234)(90,233)(91,140)(94,149)(97,173)(98,160)(100,112)
     (101,123)(106,221)(109,131)(110,176)(113,262)(114,257)(115,201)(117,260)
     (118,238)(120,275)(121,214)(122,225)(124,246)(126,170)(129,141)(134,196)
     (135,167)(142,235)(143,224)(145,205)(146,249)(148,226)(150,243)(153,193)
     (155,228)(161,231)(164,215)(165,180)(168,222)(169,270)(171,241)(172,259)
     (174,212)(178,188)(183,266)(186,203)(190,250)(202,247)(208,255)(209,251)
     (213,252)(223,271)(227,274)(230,240)(239,254)(245,258)(265,273);