bbbb bbeb bbet bblb bcbc bccc bccl bcec bcet bctc bcuc bebb bebe bebo becu beeb beel beet bele bell belo belt belu beo- beot betc bete beto bett betu blbt blcu bleb blee bleo blet bleu blob bloc bloo blot blou blub blue blut bobb bobe bobo bobu boce boco bocu boec boee boel boeo boet bole boll bolo bolt bolu boob booc booe bool boot botb bote boto bott boue boul bout btcc btcl btec btob bttb bubb bube bubo bubu bucc buce buco bucu buel bueu bulb bule bull bult bulu buol but- bute buto butt c-bo cbbc cbcc cbce cbcl cbct cbcu cbec cbee cbet cblb cblc cbol cbot cbtc cbtl ccbc cccb cccc cccl cccu ccee ccel cclc ccob ccoc cctb cctc cctl cctt ccuc ccut cebu cec- cece ceco cect ceeb ceec ceel cel- celc cele cell celo celt ceol ceou cet- cete ceto clec clee cleo clet cleu clob cloe cloo clot clou cltb cltc club clue clut cobb cobe cobo cobu coce coco coct cocu coel col- colb cole coll colo colt colu coob cool coot cotb cotc cote coto cott cotu coub coue coul cout ctec ctle ctol ctot cub- cubb cube cucc cuce culb culc cule cull culo cult cut- cutc cute cuto cutt e-cl ebbc ebbo ebcc ebel eboe ebol eboo ebul ecbc ecbe eccb eccc ecce eccl ecco ecct eclt eco- ecol ecot ecou ect- ectc ecto eeee eele eeoc eetc eete eetu el-b elbe elbo elbu elcb elce elco elec elee eleo elet elle ello ellu elte elto elue elul eole eolo eotc eoto etbc etcc etco etec etee etel etoe ette etto ettu eubc eule lbcc lcbc lccc lcce lctl lcto le-u lebo lebu lece leco lect leel leet lele lell lelo lelu leoc leou lete leto lett leuc llcc llet lleu lllc llll lloc lloo lob- lobb lobe lobo locc loce loco locu loeb loeu lole loll lolo loob looc looe lool loot lote lotl loto lott loue loul lout louu ltbl ltcc ltee lttc ltuc lube luce lule lull lulu lute o-eo obbo obec obel obet oble oblu oboe obol obot ocbc occc occt oce ocee ocet oclc oct- octe octo ocul oec- oecc oeec oele olbo olcc ole- oleo olet olle ollo olot oltu oobe oolo oooo ootb otcl otee oto- otoe otoo otte otto ottu oucc oule oulu out- outb oute outo ouu- tbcb tbcc tbce tccc tccu tctc tcul tebo tebu tecl teco tect teec teel teet tel- telc tele tell telo telt telu tete teto tett tetu teut tlco tobe tobo tobt tobu toce toco toee toet tol- tole toll tolo tolt tolu tool toot totc tote toto tott toul tout ttbb tteo ttoe tttt ttul tubb tube tubo tubu tucc tuco tuel tuet tule tull tulo tulu tute tutl tuto tutt tutu tuuo ubbe ubbo ubet uble ublo uboc ucbc ucel ucut uele uell ulbc ulcc ulco uleb ulee uleo ulle ullo ulo- uloc ulto ultt ulul uocc uolc utec utel utto uttu uulu uuoc uuuu