bbbb bblb bcbc bccc bccl bcnu bcuc blcu blkb blno blob bloc blok blon bloo blou blub bnoc bobb bobo bobu bock boco bocu bokn boko boku bolk boll boln bolo bolu bonc bonk bonn bono bonu boob booc book bool boon bouk boul boun bubb bubo bubu bucc buck buco bucu bukk buko buku bulb bulk bull bulu bunb bunk bunn buno bunu buol buon c-bo cbbc cbcc cbcl cbcn cbcu cbkl cbkn cbko cblb cblc cbln cbol ccbc ccbn cccb cccc cccl cccu cclc ccnb ccnc ccnu ccob ccoc ccuc ckbc ckck ckcl ckco ckln cknb cknc ckob ckoc ckoo clob clok clon cloo clou club clun cnbc cnbl cnco cobb cobo cobu cock coco cocu cok- coko col- colb colk coll coln colo colu con- conc conk conn cono coob cook cool coon coub couk coul coun cub- cubb cucc cuck cucn cuk- culb culc culk cull culo cuno cuon k-lo kbbb kbbc kbbk kbbl kbbo kbbu kbcb kbck kbcl kbco kbcu kbkb kbkk kbkl kbko kblb kbll kblo kblu kbnl kbnn kbno kbnu kbob kboc kbok kbon kboo kbub kbuc kbuk kbul kbun kbuu kcbc kcbk kcbl kcbu kccb kccc kcck kccl kccu kckc kckk kckl kckn kcko kclc kclk kcll kcln kclu kcnb kcno kcob kcol kcon kcou kcub kcuk kcul kkbb kkbl kkbn kkbo kkcb kkck kkcl kkcn kkco kkkk kklb kklc kkll kkln kklo kknb kknn kkno kknu kkob kkol kkon kkoo kkuu klbb klbc klbl klbn klbu klcb klcc klck klcl klcn klkc klkk klkl klkn klko kllb kllc kllk klnc klnn klno klob kloc klok klol klon kloo klou klub kluk klun kluu knbb knbc knbn knbu kncb knck kncn knco kncu knkk knlb knlc knnb knnk knob knoc knok knol knon knou knub knuk kobb kobc kobk kobn kobo kobu kocb kock kocn kokb kokc kokk kokn koko koku kolb kolc kolk koll koln kolo kolu konc konk kono koob kooc kook kool koon kooo koou koub koul kouu kubb kubc kubo kubu kucb kucc kuco kukk kukl kukn kuku kulb kull kuln kulo kulu kunc kunk kuno kunu kuok kuol kuon kuoo kuub kuuk kuul kuuu lbcc lcbc lccc llcc lllc llll lloc lloo lnnk lob- lobb lobo locc lock locn loco locu lokk loko loll lolo lonk lono loob looc look lool loon louk loul loun louu luck luko lull lulu lunk lunn luno luuk nbbc nbbo nbcc nbco ncbc nccc nccn nccu nclc ncln ncnc ncoc ncuk nkok nlcc nnnn nobc nobo nobu nock nocl noco noko noll nolo non- nonn nono nonu noo- noob nook nool noon nooo noul noun nubc nubk nubl nuck nucu nuku null nunc nunk nunn nuno nuoc nuon nuuk obbo obkb oblu obok obol obon ocbc occc occn oclc ocon ocul okcu okko oklo okno okok okol okon okul okun olbo olcc ollo olon onc- onco onno onon ooku oolo oooo oucc oulk oulu oun- ouu- ubbo ublo uboc ubon ucbc ucon ukcc ukko uknc ukok ukon ulbc ulcc ulco ullo ulno ulo- uloc uluk ulul uncc uncl unco unkl unkn unko unno unon uocc uolc uulu uuno uuoc uuuu