bbbb bbci bbdd bbfc bcbc bccc bcci bcfc bcit bctc bcuc bdbc bddc bdii bduf bftt bibb bibi bicc bici bidi bidu biff bifi bitc bitd bitt bitu btcc btdt btfc bttb bubb bubi bubu bucc buci bucu budb budd budi budu bufc buff buic buid buif buit buiu but- buti butt c-cd cbbc cbcc cbct cbcu cbdb cbdc cbdi cbfb cbfc cbid cbit cbtc cbtf ccbc cccb cccc cccf ccci cccu ccdc ccdf ccdi ccfc ccfd ccff ccfi ccic ccid ccii cctb cctc cctt ccuc ccut cdbf cddb cdic cdii cfbc cfbt cfcb cfcf cffb cfit cftc cibc cibi cicc cici cict cicu cidc cidi cidt ciff ciid ciii ciit citb citf citi citt citu ciuc ctbi ctcf ctfc ctic cub- cubb cubi cucc cuci cudi cufc cuff cufi cui- cuif cuit cut- cutc cutt dbcc dbfc dbit dbtt dcbc dccb dccc dcci dcct dccu dcdb dcfc dcii dctc dddd ddub dfcc dfcu dfdt dibb dici dict didi didu dif- diff diii diti ditt dtcc dtfc dub- dubb dubc dubu duct dudd dudu dufc duff dufu duid duif duit duut fccf fcic fcii fdic fdtc fdti ffcc ffff ffii fftf ficc fict fidc fidf fifc fiff fifi fift fiii fitc fiti fitt ft-c ftcd ftdi ftfc ftii ftub ftuc fubb fubu fuc- fuci fuct fudd fudi fufc fuff fufu fuid fuit futi futu ibfi ibid ibtb ibtc icbc icbd iccb iccc iccf icci icct iccu icdc icdd icfb icub idfc idic idid idub ifbb ifcd ific ifid ifit iicd iiii iiit iitt iiuc itic itif ittf iucc iuiu tbcb tbcc tbcd tbit tccc tccu tcdd tcfc tctc tddb tdff tfcu tfdc tftc tibi tibu ticc tidc tidd tiff tift tiit tiiu titc titi titt titu ttbb ttfc ttff tttt tubb tubu tucc tudi tudu tufc tuff tufi tuft tufu tuit tuiu tuti tutt tutu ubbi ubic ubid ubii ubit ubtf ubud ucbc ucci ucdc ucdd ucfb ucut udbc uddi udic udid ufcu utid utti uttu uutf uuuu