bbbb bbci bblb bcbc bccc bcci bccl bibb bibi bibl bibo bicc bici bick bico biko bili bilk bill bilo bio- bioc bioi biol blic blik blio blkb blob bloc blok bloo bobb bobi bobo bock boco boi- boii boil boki boko boli bolk boll bolo boob booc book bool c-bo cbbc cbcc cbcl cbkl cbko cblb cblc cbol ccbc cccb cccc ccci cccl ccic ccii ccil cclc ccli ccob ccoc cibc cibi cibo cicc cici cico ciii ciko cili cilk cill cilo ciob ckbc ckbi ckck ckcl ckco ckob ckoc ckoi ckoo clib clic clii clik clio clob clok cloo cobb cobi cobo cock coco coil cok- coko col- colb coli colk coll colo coob cook cool icbc iccb iccc icci iccl icco icll icoc iiii iiio iioi iioo ikki ikko ikoo ilbc ilic ilio ilki ill- illi illo iloc ilok iloo iobi ioci ioii ioio ioko iolo iooi iooo k-ci k-lo kbbb kbbc kbbi kbbk kbbl kbbo kbcb kbci kbck kbcl kbco kbib kbic kbik kbil kbio kbkb kbkk kbkl kbko kblb kbll kblo kbob kboc kboi kbok kboo kcbc kcbi kcbk kcbl kccb kccc kcci kcck kccl kcic kcii kcil kckc kckk kckl kcko kclc kcli kclk kcll kcob kcol kibb kibc kibi kibl kibo kicb kicc kick kicl kiic kiii kiik kikc kiki kikk kiko kilb kili kilk kill kilo kioc kioi kiok kiol kioo kkbb kkbi kkbl kkbo kkcb kkci kkck kkcl kkco kkic kkik kkkk kklb kklc kkli kkll kklo kkob kkol kkoo klbb klbc klbl klcb klcc klci klck klcl klib klic klik klil klio klkc klkk klkl klko kllb kllc kllk klob kloc klok klol kloo kobb kobc kobi kobk kobo kocb koci kock koii koil kokb kokc koki kokk koko kolb kolc koli kolk koll kolo koob kooc kooi kook kool kooo lbcc lcbc lccc libc libo lick lico liii liko lilb lili lill lilo lio- llcc lllc llll lloc lloo lob- lobb lobi lobo locc loci lock loco loic loik loki lokk loko loli loll lolo loob looc look lool obbo obkb oboi obok obol ocbc occc occi oclc oici oick oiii oiko okic okko oklo okok okol olbo olcc olib olic olio olki olli ollo oobi oolo oooo