bbbb bbcm bbdd bbdo bcbc bccc bccm bctc bdbc bddc bmdb bmoc bmtc bobb bobo bocm boco bodb bodo bomb bomt boob booc bood boom boot botb botd boto bott btcc btdt btob bttb c-bo c-cd cbbc cbcc cbcm cbct cbdb cbdc cbdo cbot cbtc ccbc cccb cccc cccm ccdc ccdm ccmb ccmc ccmd ccmm ccob ccoc ccod ccom cctb cctc cctt cddb cdom cdot cmbc cmcc cmdb cmmb cmmc cmoc cmot cmtc cobb cobo coco coct codd com- comb comc comd comm como coob cood coom coot cotb cotc coto cott ctmo ctot d-bo dbcc dbtt dcbc dccb dccc dcct dcdb dcom dctc dctm dddd ddoc ddot dmcc dmcm dmdc dmdt dobb doco doct dod- dodd dodo domb domm domo doob dood doom doot dotd doto dott dtcc dtot mbdb mcbc mccc mccd mcdc mcdd mcdo mcmc mcmt mcot mctc mdcc mddm mdmc mdoc mdot mmcc mmcd mmcm mmct mmdb mmdc mmmc mmmd mmmm mmod mobb mobo moco modd modo momo moob mooc mood moot motb motd motm moto mott mtbc mtbd mtbo mtom obbo obdt obot obtd ocbc occc occt ocom oct- octo odbo oddd odom odoo odot ombo omdb omo- omoo oooo ootb otbd otcd oto- otoo otto t-mo tbcb tbcc tbcd tccc tcdd tcom tctc tddb tmbc tmcc tmcm tmtt tobo tobt toco todd todo todt tomb tomm tomo tomt tood toom toot totc totd totm toto tott ttbb tttt