ombo ombu omha omma omn- omo- omoa omon omoo omor omra omro omul omuo onab onah onal onam onan onar onha onla onna onno onon onor onra onur ooaa ooba ooha ooho oola oolo ooma oona oooh oooo oora orab orah oral oram oran orao orar orba orbb orbo orbu orla orlo orlu orma ormn ormo orna orno oro- orom oron oror orra orro orub orum ouan oula oulu ouma oun- ouna our- oura ourn ouro ouu- raab raam raan raba rabb rabl rabo rabu raha rahl rahm rahn rahr rahu rala ralb rall ralo rama ramb raml ramm ramo ramu rana rann rano raob raoh raol raom rara rarb raro raua raub raul raum raun rbbb rbbr rboh rhau rhoa rhob rhoh rhon rhum rhun rlab rlml rlua rman rmll rmon rnal rnbr rnhl roab roam roan roar rob- roba robb robo robu roha rohl rohm rohn rohr rohu rola roll rolm rolo roma romb romm romo rona rono roob rool room roon roor rora roro roru roua roub rouh roul roum roun rrah rrna rrrr rrum rrun ruah ruan ruba rubb rubu ruhh ruhl ruhm ruhn ruhr rula rull rulo ruma rumb ruml rumm rumo runa runn runo rura ruro ruru ruun uaru uaua ubal ubar ubba ubbo ubla ublo ubon ubra uhna uhno uhoh uhuh ulaa ulam ulan ular ulla ullo ullr ulma ulmo ulmu ulna ulno ulo- ulua ulul ulum umaa uman umar umb- umba umbo umla umma ummo umno umol umor umra unaa unal unam unan unar unau unha unma unmr unna unno unon unra unro unum uoml uomo uor- ural uran urao urau urba urho urla urma urna uro- uroa urol urom uroo urra urrh urum urun urur uulu uuno uuuu