b11 := (1,2)(3,5)(4,7)(6,10)(9,14)(11,17)(12,19)(13,21)(15,24)(16,26)(18,29)
     (20,31)(22,34)(25,37)(27,40)(30,44)(32,47)(33,49)(35,52)(38,56)(39,57)
     (42,61)(43,63)(45,66)(46,68)(48,71)(50,73)(51,75)(53,69)(54,79)(55,81)
     (58,85)(59,87)(60,89)(64,93)(65,86)(67,97)(70,101)(72,104)(74,107)(76,
     110)(77,112)(78,114)(80,115)(82,118)(83,120)(88,123)(90,126)(91,128)(92,
     129)(95,133)(96,135)(98,138)(100,140)(102,143)(103,144)(105,147)(108,150)
     (109,151)(111,154)(116,160)(117,161)(119,164)(121,167)(122,169)(124,172)
     (125,174)(127,177)(131,181)(132,183)(134,185)(136,187)(141,193)(142,194)
     (145,198)(146,200)(148,203)(149,205)(152,209)(153,173)(155,212)(156,213)
     (157,215)(158,217)(159,219)(162,223)(163,225)(165,228)(166,229)(168,232)
     (170,235)(171,237)(175,241)(176,243)(178,246)(179,247)(180,249)(182,252)
     (184,255)(186,258)(188,260)(189,262)(190,264)(191,266)(192,268)(195,272)
     (196,274)(197,276)(199,251)(201,279)(202,281)(204,283)(206,230)(207,286)
     (208,288)(210,291)(211,292)(214,231)(216,298)(218,299)(220,302)(221,303)
     (224,290)(226,308)(227,310)(233,315)(234,316)(236,319)(238,321)(239,323)
     (240,324)(242,327)(244,330)(245,332)(248,336)(250,339)(253,341)(254,343)
     (256,346)(259,350)(261,352)(263,353)(265,313)(267,357)(269,358)(270,360)
     (271,362)(273,365)(275,368)(277,371)(278,289)(280,374)(282,377)(284,379)
     (285,381)(287,384)(294,389)(295,391)(296,393)(297,395)(300,399)(301,400)
     (305,404)(306,406)(307,408)(309,410)(311,412)(312,414)(317,420)(318,422)
     (320,425)(322,387)(325,431)(328,434)(329,435)(331,437)(333,440)(334,403)
     (335,443)(337,445)(338,354)(340,449)(344,453)(345,455)(348,459)(349,461)
     (351,386)(359,466)(361,468)(363,416)(364,470)(366,473)(367,474)(369,477)
     (370,479)(372,482)(373,464)(375,480)(376,456)(378,486)(380,488)(382,491)
     (385,494)(388,497)(390,451)(392,501)(396,503)(397,504)(398,485)(401,506)
     (402,507)(405,510)(407,512)(409,444)(411,516)(413,518)(415,520)(417,523)
     (418,524)(419,526)(421,528)(423,489)(424,511)(426,452)(427,533)(428,535)
     (429,536)(430,521)(432,538)(436,439)(438,543)(441,513)(442,547)(446,484)
     (447,550)(448,551)(450,552)(457,556)(458,557)(460,558)(462,560)(463,530)
     (467,481)(469,566)(471,545)(472,569)(475,573)(476,575)(478,578)(487,582)
     (493,584)(495,586)(496,588)(498,563)(499,590)(502,539)(505,595)(508,599)
     (509,564)(514,604)(515,527)(517,600)(519,607)(522,608)(532,603)(534,594)
     (537,616)(540,618)(541,598)(542,544)(546,615)(548,622)(549,624)(553,626)
     (554,627)(555,628)(559,620)(561,633)(562,631)(565,589)(567,576)(568,636)
     (571,610)(574,639)(580,644)(583,643)(585,649)(587,647)(591,648)(592,655)
     (596,657)(597,659)(601,661)(602,634)(605,666)(606,656)(611,668)(613,671)
     (619,674)(632,681)(635,683)(637,686)(640,680)(642,672)(646,689)(650,690)
     (651,670)(653,693)(654,685)(660,664)(662,682)(665,676)(667,697)(669,695)
     (673,699)(675,700)(678,679)(688,698)(691,703)(694,701);