bbbb bboy bbrc bbyo bcbc bccc bcor bcoz bkcy bkry bobb bobo boby bock boco boko boob booc book boor booz bor- bork boro borr bory borz boyo boyz bozo brcb brkb brob broc brok broo bror broz brrr bry- bryk bryo byck byob byoc byrk bzrk bzyb bzzz c-bo cbbc cbcc cbcr cbko cbkr cbry ccbc cccb cccc ccob ccoc ccrc ckbc ckck ckco ckcy ckob ckoc ckoo ckor ckoy ckrc ckry cobb cobo coby cock coco cok- coko coky coob cook cor- corb corc cork coro corr cory coyo coyr cozy cozz crbc crcc crcr crcz crkc crob croc crok croo cror croy croz cry- cryb cryo cryz cybb cybc cybo cyc- cycb cycc cyrk cyy- cyyc czyz kbbb kbbc kbbk kbbo kbbr kbbz kbcb kbck kbco kbcr kbcy kbcz kbkb kbkk kbko kbkr kbky kbkz kbob kboc kbok kboo kboz kbrb kbrc kbrk kbro kbry kbrz kbyb kbyo kbyr kbyz kbzc kbzo kbzy kbzz kcbc kcbk kcbr kccb kccc kcck kccr kccy kckc kckk kcko kckr kcky kckz kcob kcor kcoz kcrc kcro kcrr kcry kcrz kcyk kcyy kcyz kczo kczz kkbb kkbo kkbr kkbz kkcb kkck kkco kkcr kkcy kkkk kkob kkoo kkor kkoy kkoz kkrb kkrc kkrk kkro kkrr kkrz kkyc kkyy kkyz kkzy kkzz kobb kobc kobk kobo kobr koby kocb kock kokb kokc kokk koko kokr koky kokz koob kooc kook kooo koor kooz korb korc kork koro korr koyo koyy kozb kozk kozo kozr kozy krbb krbk krbr krbz krcb krcc krco krkc krkk krko krkr krky krkz krob kroc krok kroo kror kroy kroz krrb krrc krrk krro krrr krry krrz kryk kryo kryy krzk krzr krzy krzz kybb kybc kybo kybr kyby kycc kyck kycr kykc kykk kykr kyky kykz kyok kyoo kyor kyoy kyrc kyrk kyro kyyk kyyo kyyy kyyz kyzk kyzz kzbb kzbk kzbr kzbz kzcr kzkr kzky kzkz kzoo kzor kzoy kzoz kzrb kzrc kzrk kzro kzrr kzrz kzyr kzzb kzzk kzzo kzzr kzzy kzzz obbo obby obkb obok obor oboy obro ocbc occc ocro ocrr okby okko okok okor okro okyo ooby oocr ooky oooo oory oozy orbb orbo orby orco orko oro- orok oror oroy oroz orro orry orzk orzo ozzy rbbb rbbr rcbc rcbo rccb rccc rcyc rob- robb robo roby rocc rock roco rokk roko rokr roky roob rook roor rooz rorc rork roro rory rozz rrrr ryck ryob ybor ybry yccc ykko yobo yock yoko yoky yook yooz york yoro yory yoyo yozo yyyy z-ro zobo zoco zoo- zook zorb zorc zork zoro zory zozo zzzz