bbbb bbdd bbdo bboy bbrc bbyo bcbc bccc bcor bd-r bdbc bddc bdry bkcy bkry bobb bobo boby bock boco bodb bodo body boko boob booc bood book boor bor- bord bork boro borr bory boyd boyo brcb brdo brdy brkb brob broc brod brok broo bror brrr bry- bryd bryk bryo byck byob byoc byod byrd byrk byyd c-bo c-cd cbbc cbcc cbcr cbdb cbdc cbdo cbko cbkr cbrd cbry ccbc cccb cccc ccdc ccdr ccob ccoc ccod ccrc cd-r cddb cddr ckbc ckck ckco ckcy ckdo ckob ckoc ckoo ckor ckoy ckrc ckrd ckry cobb cobo coby cock coco codd cody cok- coko coky coob cood cook cor- corb corc cord cork coro corr cory coyo coyr crbc crcc crcr crdc crkc crob croc crod crok croo cror croy cry- cryb cryo cybb cybc cybo cyc- cycb cycc cyrk cyy- cyyc d-bo dbcc dboy dc-y dcbc dccb dccc dcdb dcrk dddd ddoc ddrc ddry dkdc dobb doby dock doco dod- dodd dodo dody doko doky doob dood dook door dorc dord dork doro dorr dory doyk doyo drbc drob drod droy dry- dycd dyck dydd dyko dykr dyo- dyok dyoo dyor dyr- dyrb dyrc dyrk dyro dyyr kbbb kbbc kbbd kbbk kbbo kbbr kbcb kbck kbco kbcr kbcy kbdb kbdo kbdr kbdy kbkb kbkk kbko kbkr kbky kbob kboc kbod kbok kboo kbrb kbrc kbrd kbrk kbro kbry kbyb kbyo kbyr kcbc kcbd kcbk kcbr kccb kccc kccd kcck kccr kccy kcdc kcdd kcdr kcdy kckc kckk kcko kckr kcky kcob kcor kcrc kcro kcrr kcry kcyk kcyy kdbb kdbr kdcc kdcd kdco kdcr kddb kddc kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdoc kdok kdrb kdro kdry kdyk kkbb kkbd kkbo kkbr kkcb kkcd kkck kkco kkcr kkcy kkdc kkdd kkdo kkdy kkkk kkob kkoo kkor kkoy kkrb kkrc kkrk kkro kkrr kkyc kkyy kobb kobc kobk kobo kobr koby kocb kocd kock kodk kodo kody kokb kokc kokk koko kokr koky koob kooc kook kooo koor korb korc kord kork koro korr koyo koyy krbb krbd krbk krbr krcb krcc krcd krco krdc krdd krdo krdr krdy krkc krkd krkk krko krkr krky krob kroc krod krok kroo kror kroy krrb krrc krrk krro krrr krry kryd kryk kryo kryy kybb kybc kybo kybr kyby kycc kyck kycr kydd kydo kydy kykc kykd kykk kykr kyky kyok kyoo kyor kyoy kyrc kyrk kyro kyyk kyyo kyyy obbo obby obkb obok obor oboy obro ocbc occc ocro ocrr odbo oddd oddy odoo odor odry odyr okby okko okok okor okro okyo ooby oocr ooky oooo oord oory orbb orbo orby orco ordo orko oro- orok oror oroy orro orry rbbb rbbr rcbc rcbo rccb rccc rcdc rcrd rcyc rdoc rob- robb robo roby rocc rock roco rodd rodo rody rokk roko rokr roky roob rood rook roor rorc rork roro rory royd rrrr ryck rydy ryob ybor ybry yccc ykko yobo yock yodo yoko yoky yood yook yord york yoro yory yoyo yyyy