-hou bbbb bbch bbdd bbdo bcbc bccc bchd bcnu bcuc bdbc bddc bddh bhcc bhuu bnoc bobb bobo bobu boch bock boco bocu bodb bodh bodo bodu bohd bohn boho bohu bokn boko boku bonc bond bonk bonn bono bonu boob booc bood booh book boon boud bouh bouk boun bubb bubo bubu bucc buch buck buco bucu budb budd budo budu buho bukh bukk buko buku bunb bund bunk bunn buno bunu buon c-bo c-cd cbbc cbcc cbcn cbcu cbdb cbdc cbdn cbdo cbkn cbko cbnd ccbc ccbn cccb cccc cccu ccdc ccdh ccdn ccnb ccnc ccnu ccob ccoc ccod ccuc cddb cdnb cdnc cdon chch chkb chnb chnc chno choc chod choh chok chon choo chou chub chud chuk chun ckbc ckch ckck ckco ckdo ckdu cknb cknc ckob ckoc ckoo cnbc cnco cndd cnoh cobb cobh cobo cobu coch cock coco cocu codd cohn coho cok- coko con- conc cond conk conn cono coob cood cooh cook coon coub coud couk coun cub- cubb cucc cuck cucn cuk- cund cuno cuon d-bo dbcc dcbc dccb dccc dccu dcdb dcon dddd ddoc ddub dhod dhun dkdc dnoc dnuk dobb dobu doch dock doco docu dod- dodd dodo dohc doko donc dond donk donn dono doob dood dook doon doub douc doud douk doun dub- dubb dubc dubh dubu duch duck duco dudd dudo dudu duhu duku dunc dunk dunn duno duo- duon hbcd hboc hcbc hccb hccc hcch hdbk hdoc hdod hhhh hkbu hkcc hknd hndd hobo hoch hock hocn hodh hodk hohn hoho hoko hoku hond honk hono honu hood hook hoon houd houk hubb hubo huch huck hucu hudd hudo hudu huhn huhu hunc hund hunh hunk huon huub kbbb kbbc kbbd kbbk kbbo kbbu kbcb kbch kbck kbco kbcu kbdb kbdn kbdo kbhb kbhc kbhh kbhn kbkb kbkk kbko kbnd kbnh kbnn kbno kbnu kbob kboc kbod kbok kbon kboo kbub kbuc kbud kbuk kbun kbuu kcbc kcbd kcbk kcbu kccb kccc kccd kcck kccu kcdc kcdd kcdu kchh kchk kchn kcho kchu kckc kckk kckn kcko kcnb kcnd kcnh kcno kcob kcoh kcon kcou kcub kcuh kcuk kdbb kdbn kdcc kdcd kdco kddb kddc kddd kddk kdhn kdkb kdkd kdkk kdkn kdko kdnd kdnk kdnn kdno kdoc kdok kdub kduc kdun khbc khbd khcb khcc khch khck khdc khdk khdn khhk khho khkk khkn khnc khnd khnk khnu khob khoc khok khon khou khub khud khuk khun kkbb kkbd kkbn kkbo kkcb kkcd kkch kkck kkcn kkco kkdc kkdd kkdo kkhb kkhh kkhk kkkk kknb kknd kknn kkno kknu kkob kkoh kkon kkoo kkuu knbb knbc knbn knbu kncb knch knck kncn knco kncu kndb kndc kndd kndh kndk kndn kndo kndu knhc knhk knkk knnb knnd knnk knob knoc knod knok knon knou knub knud knuk kobb kobc kobk kobn kobo kobu kocb kocd koch kock kocn kodk kodo kodu kohd kohh kohn koho kohu kokb kokc kokh kokk kokn koko koku konc kond konk kono koob kooc kook koon kooo koou koub kouu kubb kubc kubd kubo kubu kucb kucc kucd kuch kuco kudd kudo kudu kuhn kuhu kukh kukk kukn kuku kunc kund kunk kuno kunu kuok kuon kuoo kuub kuuk kuuu nbbc nbbo nbcc nbco nbhd ncbc nccc nccn nccu ncdc ncdn ncdu nchc nchd ncnc ncnd ncoc ncuk ndcc nddb nddo ndoc nhcc nhnn nhon nkok nndb nnnn nobc nobo nobu noch nock noco nodo nodu nohn noho noko non- nonn nono nonu noo- noob nook noon nooo nouh noun nubc nubk nuch nuck nucu nudc nudd nudo nuku nunc nunk nunn nuno nuoc nuon nuuk obbo obkb obok obon obuh ocbc occc occn ocon odbo oddd odnb odoh odon odoo odou ohcc ohho ohno ohob ohoh ohok okcu okko okno okok okon okun onc- oncd onco ondo onno onod onon ooho ooku oooh oooo oucc ouch oudc oudh oun- ound ouu- ubbo uboc ubod ubon ubud ucbc ucdc ucdd ucho ucon udbc udoh udon udoo uduk udun uh-d uhno uhoh uhok uhuh ukcc ukko uknc ukok ukon unbd uncc unch unco undo unkn unko unno unon uocc uuno uuoc uuuu