bbbb bbcm bblb bcbc bccc bccl bccm bctc bcuc blbt blcu blub blum blut bmtc btcc btcl bttb bubb bubu bucc bucu bulb bull bult bulu bum- bumb but- butt cbbc cbcc cbcl cbcm cbct cbcu cblb cblc cbtc cbtl ccbc cccb cccc cccl cccm cccu cclc cclm ccmb ccmc ccmm cctb cctc cctl cctt ccuc ccut cltb cltc club clum clut cmbc cmcc cmll cmmb cmmc cmml cmtc cmtu cub- cubb cucc cucm culb culc cull culm cult cum- cumt cut- cutc cutt lbcc lbmc lcbc lccc lccm lctl lctm llcc lllc llll lmcc ltbl ltcc lttc ltuc lull lulu lumb lumc mcbc mccc mccl mclt mcmc mcml mcmt mctc mctu mlcc mltb mmcc mmcl mmcm mmct mmmc mmmm mtbc mtlb mtuc muc- mucc mucu mull mulm mult mulu mumm mumu mutt mutu muut tbcb tbcc tccc tccu tctc tcul tmbc tmcc tmcm tmtt ttbb ttml tttt ttul tubb tubu tucc tull tulu tumb tumu tutl tutt tutu tuum ucbc ucmc ucut ulbc ulcc ulmu ultt ulul ulum umb- umut utmb uttu uulu uuuu