nuba nubc nuca nuch nucu nuha nuna nunc nunn nuno nunt nuoc nuon nura nurc nurn nurr nurt nuru nuth nutt nutu oaau oahu oara oath oban obba obbo obon obor obot obra obrh obro obuh ocab ocac ocan ocat ocbc occa occc occn occt ocha ocht ocna ocon ocra ocro ocrr oct- octa octo ocur ohan ohau ohba ohcc ohho ohno ohob ohoh ohra ohrn ohta ohto ohtu onab onah onan onar onat onc- onca onco onct onha onna onno onon onor onra ont- ontc onto onur onut ooaa ooba oocr ooha ooho oona oont oooh oooo oora oort ootb orab orac orah oran orao orar orat orba orbb orbo orbu orca orch orco orna ornc orno oro- oron oror orot orra orro orta ortc orth orto orub otac otan otar otha otho othr oto- otoh oton otoo otor otra otro otta otto ottu otur ouac ouan ouat oucc ouch oun- ouna our- oura ourn ouro ourt out- outa outb outh outo ouu- raab raan raat raba rabb rabo rabu rac- raca racc rach raco ract racu raha rahn rahr raht rahu rana ranc rann rano rant raob raoc raoh rara rarb raro rata rath rato ratt ratu raua raub rauc raun raut rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rcnr rcon rctc rhau rhoa rhob rhoc rhoh rhon rhun rnbr rnco rnnt rnot rnut roab roan roar roat rob- roba robb robo robt robu roca rocc roch roco roha rohn rohr rohu rona ronc rono ront roob roon roor root rora rorc roro rort roru rota rotc roth rotn roto rotr rott roua roub rouh roun rout rrah rrat rrna rrrr rrun rtan rtca rtcc ruah ruan ruba rubb rubu ruca ruch ruct ruhh ruhn ruhr runa runc runn runo runt rura rurc ruro ruru ruta ruth ruto rutt rutu ruun taa- taan taar taat taba tabb tabc tabo tabu taca tacc tach taco tact taha tahn taho tahr tahu tana tanh tann tano tant tanu taoa taor taou tara tarb tarc tarn taro tarr tart taru tata tatb tath tato tatr tatt tatu taua taub tauc taur taut tbar tbca tbcb tbcc tbrb tbta tcca tccc tccu tch- tcha tchh tcho tchr tchu tcnn tcon tctc thaa than thao thar that thau thca thch thnt thon thoo thor thot thou thra thro thru thtb thtr thun thur tnbc tnca tncc tnut toab toan toat toau toba tobo tobt tobu toca toch toco toho tohu tona tonb tonh tonn tono tonu tooa tooh toon toor toot tora torc torn toro torr tort toru tota totc toth toto totr tott touh toun tour tout traa trab trac tran trao trat trau trca trcc trna trno troa troc tron troo trot trou trra trtc trtr trub truc trun trut truu ttab ttbb ttcn tton tttt tuan tuao tuar tuat tuba tubb tubo tubr tubu tuca tucc tuch tuco tuht tuhu tuna tunb tunc tunn tuno tunu tuor tura turb turc turn turo turr turt turu tuta tuto tutt tutu tuuo uabc uaca uaoc uarc uart uaru uata uath uatu uaua ubac ubar ubba ubbo uboc ubon ubra ucan ucar ucat ucbc ucca ucha ucho ucon ucrc ucua ucut uhna uhno uhoh uhta uhuh unaa unac unan unar unat unau unca uncc unch unco unct unha unna unno unon unra unro untb unth unto unut uocc uor- urac uran urao urat urau urba urca urch urho urna uro- uroa uroo urra urrh urth urun urur urut utac utah utan utau utha utor utto uttu uuno uuoc uuta uuuu