bbbb bbdd bbdo bbeb bcbc bccc bcde bcec bcuc bdbc bddc bebb bebe bebo beck becu bede bedo bedu beeb beed beek beke beko beo- beod beok beuk bobb bobe bobo bobu boce bock boco bocu bodb bode bodo bodu boec boee boeo boke boko boku boob booc bood booe book boud boue bouk bubb bube bubo bubu bucc buce buck buco bucu budb budd bude budo budu bueu buke bukk buko buku c-bo c-cd cbbc cbcc cbce cbcu cbdb cbdc cbdo cbec cbee cbko ccbc cccb cccc cccu ccdc cced ccee ccob ccoc ccod ccuc cd-e cddb cdec cebu cec- cece ceco cedd cede cedo cedu ceeb ceec ceke ceou ckbc ckbe ckck ckco ckdo ckdu ckob ckoc ckoo cobb cobe cobo cobu coce cock coco cocu codd code coed cok- coke coko coob cood cook coub coud coue couk cub- cubb cube cucc cuce cuck cude cued cuek cuk- cuke d-bo dbcc dcbc dccb dccc dccu dcdb dddd ddoc ddub debe debu dec- decc decd dece deck deco dedd dede dedo dedu deeb deed deek dek- deke deue deuk dkdc dobb dobe dobu doce dock doco docu dod- dodd dode dodo doek doke doko doob dood dook doub douc doud doue douk dub- dubb dubc dube dubu duce duck duco dudd dude dudo dudu duke duku duo- ebbc ebbo ebcc ebed eboe eboo ecbc ecbe eccb eccc ecce ecco ecdc eced ecko eco- ecod ecou eddc edde eddo ede- edoc edod edou educ eede eedu eeee eeke eeoc ekco ekeb eked ekek eocd eode eubc eucd eude kbbb kbbc kbbd kbbe kbbk kbbo kbbu kbcb kbce kbck kbco kbcu kbdb kbde kbdo kbeb kbec kbed kbee kbek kbeo kbkb kbkk kbko kbob kboc kbod kboe kbok kboo kbub kbuc kbud kbue kbuk kbuu kcbc kcbd kcbk kcbu kccb kccc kccd kcck kccu kcdc kcdd kcdu kceb kcec kced kcee kceo kceu kckc kckk kcko kcob kcoe kcou kcub kcue kcuk kdbb kdcc kdcd kdce kdco kddb kddc kddd kddk kdeb kdec kdkb kdkd kdkk kdko kdoc kdoe kdok kdub kduc kebb kebc kebe kebu keck keco kedb kedc kedd kede kedo keed keek kekb kekc keke keko keku keok kkbb kkbd kkbe kkbo kkcb kkcd kkck kkco kkdc kkdd kkdo kked kkkk kkob kkoo kkuu kobb kobc kobe kobk kobo kobu kocb kocd kock kode kodk kodo kodu koed kokb kokc koke kokk koko koku koob kooc kook kooo koou koub koue kouu kubb kubc kubd kube kubo kubu kucb kucc kucd kuce kuco kudd kude kudo kudu kued kuek kueu kuke kukk kuku kuok kuoo kuub kuuk kuuu o-eo obbo obec obed obkb oboe obok ocbc occc oce oced ocee ocke odbo oddd oded odeo odoo odou oec- oecc oedo oeec okcu oked okko okok oobe ooku oooo oucc oudc oude oued ouu- ubbe ubbo ubek uboc ubod ubud ucbc ucdc ucdd udbc udoo uduk ukcc ukek ukeu ukko ukok uocc uoke uuoc uuuu