-hou bbbb bbdd bbdo bbpr bd-r bddh bhor bhur bhuu bnor bnpp bnrr bobb bobo bobu bodb bodh bodo bodu bohd bohn boho bohr bohu bond bonn bono bonu boob bood booh boon boop boor bopp bor- bord borh born boro borr boru boud bouh boun boup bour bprd brdo brno brob brod broh bron broo bror brou brrr brud bruh brun brup bubb bubo bubu budb budd budo budu buho buhr bunb bund bunn buno bunu buon bur- burb burd burh burn buro burp burr buru d-bo dbpd dbrn dddd ddpo ddub dhbp dhod dhor dhpr dhrn dhun dhur dnpo dobb dobu dod- dodd dodo dohr dond donn dono donp donr doob dood doon doop door dopo dopp dopr dord dorn doro dorp dorr doru doub doud doun doup dour dphp dpph drnh drno drob drod droh dron drop drou drub drup druu dub- dubb dubh dubu dudd dudo dudu duhr duhu dunn duno duo- duon dupo durn duro duru duur hdod hhhh hndd hobo hodh hodr hohn hoho hond hono honu hood hoon hoop hoor hopo hopp hord horn horo horr houd houp hour hpdh hrdn hrob hrod hron hrpp hrud hrun hubb hubo hudd hudo hudu huhn huhu hund hunh huon huor hupp hurd hurn huro hurr huru huub n-up nbbo nbhd nbpp nddb nddo ndnp ndop ndor ndpd ndpr nhdp nhnn nhon nhrp nndb nnnn nnpr nobo nobu nodo nodu nohn noho non- nonn nono nonu noo- noob noon nooo noop noor noph nor- norb nord norn noro norr nouh noun noup nour nppd nron nrpn nrrd nudd nudo nunn nuno nuon nurd nurn nurp nurr nuru obbo obon obor obrh obro obuh odbo oddd odnb odoh odon odoo odop odor odou odrp odur ohho ohno ohob ohoh ohrn ondo onno onod onon onor onpu onup onur ooho oooh oooo oord opo- opon opor oppo orbb orbo orbu ordn ordo ordu orno oro- oron oror orph orro orub orup oudh oun- ound ouph our- ourn ouro ouu- pdpn pdpr phno phob phoh phon phoo phrr phun pnon pnpo pnpp pnro pnup pobo pod- podd podo podu pond pono ponp pood pooh poon poop poor pop- popo popp porb porn poro porr poud poun poup pour ppod pppd pppn pppo pppp ppru ppur prnd prnp pro- prob prod pron proo prop prou prpd prrd prud pruu pubu pudo pudu puhn pund puno punu pupu pur- purb puro purp purr puru rbbb rbbr rboh rdbp rhob rhod rhoh rhon rhun rnbr rndp rnod rob- robb robo robu rodd rodo rohn rohr rohu rond rono roob rood roon roop roor ropo roro roru roub roud rouh roun roup rpdp rpho rpob rpon rppn rrrr rrun rubb rubp rubu rudd rudo rudp ruhh ruhn ruhr rund runn runo rupp rurd ruro rurp ruru ruud ruun u-rp ubbo ubod ubon ubud udoh udon udoo udop udpd udun uh-d uhno uhoh uhuh uhup unbd undo unno unon unop unro uor- updo upnp upon upor uppp uppu upup urdu urho uro- uroo urpo urrh urun urup urur uuno uuuu