bbbb bbci bcbc bccc bcci bcoz bibb bibi bibo bicc bici bick bico biko bio- bioc bioi bizz bobb bobi bobo bock boco boi- boii boki boko boob booc book booz bozi bozo bzzz c-bo cbbc cbcc cbko ccbc cccb cccc ccci ccic ccii ccob ccoc cibc cibi cibo cicc cici cico ciii ciko ciob ckbc ckbi ckck ckco ckob ckoc ckoi ckoo cobb cobi cobo cock coco cok- coko coob cook cozi cozz icbc iccb iccc icci icco icoc iiii iiio iioi iioo ikki ikko ikoo iobi ioci ioii ioio ioko iooi iooo izki izzo k-ci kbbb kbbc kbbi kbbk kbbo kbbz kbcb kbci kbck kbco kbcz kbib kbic kbik kbio kbiz kbkb kbkk kbko kbkz kbob kboc kboi kbok kboo kboz kbzc kbzi kbzo kbzz kcbc kcbi kcbk kccb kccc kcci kcck kcic kcii kckc kckk kcko kckz kcob kcoz kczo kczz kibb kibc kibi kibo kibz kicb kicc kick kiic kiii kiik kikc kiki kikk kiko kikz kioc kioi kiok kioo kioz kizz kkbb kkbi kkbo kkbz kkcb kkci kkck kkco kkic kkik kkkk kkob kkoo kkoz kkzz kobb kobc kobi kobk kobo kocb koci kock koii kokb kokc koki kokk koko kokz koob kooc kooi kook kooo kooz kozb kozi kozk kozo kzbb kzbi kzbk kzbz kzio kziz kzkz kzoi kzoo kzoz kzzb kzzi kzzk kzzo kzzz obbo obkb oboi obok ocbc occc occi oici oick oiii oiko okic okko okok oobi oooo oozi zbik zibo zick zico ziki zizi zizz zobo zoco zoic zoio zoo- zook zozo zzzz