bbbb bblb bcbc bcbp bccc bccl bcpl bcpp bcuc bcup blcu blkb blob bloc blok bloo blop blou blub blup bobb bobo bobu bock boco bocu boko boku bolk boll bolo bolu boob booc book bool boop bopp bouk boul boup bpcp bubb bubo bubu bucc buck buco bucu bukk buko buku bulb bulk bull bulu buol bupc c-bo cbbc cbcc cbcl cbcp cbcu cbkl cbko cblb cblc cbol cbpc cbpp ccbc cccb cccc cccl cccp cccu cclc ccob ccoc ccpl ccpp ccuc ccup ckbc ckck ckcl ckco ckob ckoc ckoo ckpc clob clok cloo clop clou clpb clpp club cobb cobo cobu cock coco cocp cocu cok- coko col- colb colk coll colo colp colu coob cook cool coop copo copp coub couk coul coup cpbc cpcu cplc cub- cubb cucc cuck cuk- culb culc culk cull culo culp cupl cupo cupp k-lo kbbb kbbc kbbk kbbl kbbo kbbu kbcb kbck kbcl kbco kbcu kbkb kbkk kbkl kbko kblb kbll kblo kblp kblu kbob kboc kbok kboo kbpc kbpk kbpo kbpu kbub kbuc kbuk kbul kbup kbuu kcbc kcbk kcbl kcbu kccb kccc kcck kccl kccu kckc kckk kckl kcko kclc kclk kcll kclu kcob kcol kcou kcpc kcpl kcpo kcpu kcub kcuk kcul kcup kkbb kkbl kkbo kkcb kkck kkcl kkco kkkk kklb kklc kkll kklo kkob kkol kkoo kkpc kkpk kkpl kkup kkuu klbb klbc klbl klbu klcb klcc klck klcl klkc klkk klkl klko kllb kllc kllk kllp klob kloc klok klol kloo klop klou klpc klub kluk klup kluu kobb kobc kobk kobo kobu kocb kock kocp kokb kokc kokk koko kokp koku kolb kolc kolk koll kolo kolu koob kooc kook kool kooo koop koou kopb kopp kopu koub koul kouu kpbb kpbl kpcc kpcl kpkk kpkl kplc kplk kplo kplu kpob kpoc kpok kpol kpoo kpop kpou kppc kppk kppl kppo kppp kpub kpul kubb kubc kubo kubu kucb kucc kuco kucp kukk kukl kuku kulb kull kulo kulp kulu kuok kuol kuoo kuop kupb kupl kupu kuub kuuk kuul kuuu lbcc lcbc lccc lcpc lcpl llcc lllc llll lloc lloo lob- lobb lobo locc lock loco locu lokk loko loll lolo loob looc look lool loop lopp lopu louk loul loup louu lppl luck luko lull lulu lupo lupu luuk luup obbo obkb oblu obok obol ocbc occc oclc ocpp ocul okcu okko oklo okok okol okpo okul olbo olcc ollo olpc ooku oolo oooo opo- oppo oucc oulk oulu ouu- pbcc pblu pboc pbpk pcbc pccc pccl pclk pcll pclo pcpb pcpp plcc plkk plob ploc plok ploo plop plou plpp pluk plup pobo pock poco poko poku polk poll polo polu pook pool poop pop- popc popo popp pouk poul poup ppcc pplo pppo pppp publ pubu puck puku pulk pull pulo pulp pulu pupl pupu puuc ubbo ublo uboc ubpc ucbc uccp ucpb ukcc ukko ukok ukup ulbc ulcc ulco ullo ulo- uloc uluk ulul uocc uolc uplb uplo uppc uppp uppu upup uucp uulu uuoc uuuu