-hou bbbb bbch bbdd bbdo bcbc bccc bchd bcnu bcuc bdbc bddc bddh bhcc bhuu bnoc bobb bobo bobu boch boco bocu bodb bodh bodo bodu bohd bohn boho bohu bonc bond bonn bono bonu boob booc bood booh boon boud bouh boun bubb bubo bubu bucc buch buco bucu budb budd budo budu buho bunb bund bunn buno bunu buon c-bo c-cd cbbc cbcc cbcn cbcu cbdb cbdc cbdn cbdo cbnd ccbc ccbn cccb cccc cccu ccdc ccdh ccdn ccnb ccnc ccnu ccob ccoc ccod ccuc cddb cdnb cdnc cdon chch chnb chnc chno choc chod choh chon choo chou chub chud chun cnbc cnco cndd cnoh cobb cobh cobo cobu coch coco cocu codd cohn coho con- conc cond conn cono coob cood cooh coon coub coud coun cub- cubb cucc cucn cund cuno cuon d-bo dbcc dcbc dccb dccc dccu dcdb dcon dddd ddoc ddub dhod dhun dnoc dobb dobu doch doco docu dod- dodd dodo dohc donc dond donn dono doob dood doon doub douc doud doun dub- dubb dubc dubh dubu duch duco dudd dudo dudu duhu dunc dunn duno duo- duon hbcd hboc hcbc hccb hccc hcch hdoc hdod hhhh hndd hobo hoch hocn hodh hohn hoho hond hono honu hood hoon houd hubb hubo huch hucu hudd hudo hudu huhn huhu hunc hund hunh huon huub nbbc nbbo nbcc nbco nbhd ncbc nccc nccn nccu ncdc ncdn ncdu nchc nchd ncnc ncnd ncoc ndcc nddb nddo ndoc nhcc nhnn nhon nndb nnnn nobc nobo nobu noch noco nodo nodu nohn noho non- nonn nono nonu noo- noob noon nooo nouh noun nubc nuch nucu nudc nudd nudo nunc nunn nuno nuoc nuon obbo obon obuh ocbc occc occn ocon odbo oddd odnb odoh odon odoo odou ohcc ohho ohno ohob ohoh onc- oncd onco ondo onno onod onon ooho oooh oooo oucc ouch oudc oudh oun- ound ouu- ubbo uboc ubod ubon ubud ucbc ucdc ucdd ucho ucon udbc udoh udon udoo udun uh-d uhno uhoh uhuh unbd uncc unch unco undo unno unon uocc uuno uuoc uuuu