-hou bbbb bbdd bbdo bd-r bddh bhor bhot bhrt bhur bhut bhuu bnor bnrr bobb bobo bobu bodb bodh bodo bodu bohd bohn boho bohr boht bohu bond bonn bono bont bonu boob bood booh boon boor boot bor- bord borh born boro borr bort boru botb botd both botn boto bott boud bouh boun bour bout brdo brdt brno brob brod broh bron broo bror brot brou brrr brud bruh brun brut btdt btob btor btrt bttb bubb bubo bubu budb budd budo budu buho buhr bunb bund bunn buno bunt bunu buon bur- burb burd burh burn buro burr burt buru but- buto butt d-bo dbrn dbtt dddd ddot ddub dhod dhor dhrn dhun dhur dntt dnut dobb dobu dod- dodd dodo dohr dond donn dono donr dont doob dood doon door doot dord dorn doro dorr dort doru dotd doth doto dott doub doud doun dour dout drnh drno drob drod droh dron drot drou drub drut druu dthd dtnb dtor dtot dub- dubb dubh dubu dudd dudo dudu duhr duhu dunn duno dunt duo- duon durn duro durt duru duur duut hbtu hdod hdtt hhhh hndd hntb hntr hobo hodh hodr hohn hoho hond hono hont honu hood hoon hoor hoot hord horn horo horr hort hotb hotd hoth hoto hotr hott hotu houd hour hout hrdn hrob hrod hron hrtb hrud hrun htoh httr hubb hubo hudd hudo hudu huhn huhu hund hunh hunt huon huor huot hurd hurn huro hurr hurt huru huth huto hutt hutu huub nbbo nbhd nddb nddo ndnt ndor ndut nhnn nhon nndb nnnn nnot nntn nobo nobu nodo nodu nohn noho noht non- nonn nono nont nonu noo- noob noon nooo noor noot nor- norb nord norn noro norr nort not- noth noto nott nouh noun nour nout nron nrrd nthn ntht ntnd ntnu ntru ntto nttr nudd nudo nunn nuno nunt nuon nurd nurn nurr nurt nuru nuth nutt nutu obbo obdt obon obor obot obrh obro obtd obuh odbo oddd odnb odoh odon odoo odor odot odou odtu odur ohho ohno ohob ohoh ohrn ohto ohtu ondo onno onod onon onor ont- onto onur onut ooho oont oooh oooo oord oort ootb orbb orbo orbu ordn ordo ordu orno oro- oron oror orot orro orth orto orub otbd otho othr oto- otoh oton otoo otor otro otto ottu otur oudh oun- ound our- ourn ouro ourt out- outb outh outo ouu- rbbb rbbr rboh rhob rhod rhoh rhon rhun rnbr rnnt rnod rnot rntd rnut rob- robb robo robt robu rodd rodo rohn rohr rohu rond rono ront roob rood roon roor root roro rort roru roth rotn roto rotr rott roub roud rouh roun rout rrrr rrun rtdt rtnd rubb rubu rudd rudo ruhh ruhn ruhr rund runn runo runt rurd ruro ruru ruth ruto rutt rutu ruud ruun tbrb tddb tdor thdr thnt thon thoo thor thot thou thro thru thtb thtr thud thun thur tndd tnut tobo tobt tobu todd todo todt todu toho tohu tonb tonh tonn tono tonu tood tooh toon toor toot tord torn toro torr tort toru totd toth toto totr tott touh toun tour tout trno trod tron troo trot trou trtr trub trud trun trut truu ttbb tton tttt tubb tubo tubr tubu tudu tuht tuhu tunb tund tunn tuno tunu tuor turb turd turn turo turr turt turu tuto tutt tutu tuuo ubbo ubod ubon ubud udoh udon udoo udot udun uh-d uhno uhoh uhuh unbd undo unno unon unro untb unth unto unut uor- urdu urho uro- uroo urrh urth urun urur urut utor utto uttu uuno uuuu