oboga obora oboro obrab obrom oggar ognon ogogo ogron oguaa ogugu ogura omama omana omang omara omarr ombra omman omoon omoro omran omron omuma omura onaga onano onaon onara ongar ongon onman onmun onoba onoma onoon onora onorn onour onran onuma ooman oomba oonga ooooo oraba orama oramo orana orang oraon orara orban orbom organ orgon orgun orman ormur ornan ornon ornua orobo oromo orona orono oroua orrgo orrum oruga oruro ouara ouona ouoro ouran ourba ourno ra-ra raaba raagu raaor rabab raban rabba rabon rabor rabou rabun ragam ragan ragga ragno ragon ragoo raman ramar ramba rambo ramma rammu ramna ramon ramor ranam ranau ranga rango rangu ranma ranna ranno rannu ranon ranua ranum rarbg raron raugu rauma rauna raung rauno rauon rmnmn ro-ro roana roann robab robar robbo robo- robon robor robun robur rogan rogna rogno romag roman romao romon ronan ronga rongo rongu ronno rooba rooma roomu roong roram rorbu rorra rouba rouma roumm roung roura rraga rragb ruana ruang ruano rubab ruban rubba rubon rubor rubra rugao rugma ruman rumba rumbo rummo rummu rumor runan runga rungu runo- runon ruomu ruran u-man uaroo ubobo uboga ugboa ugong ugro- ugrug umaga umana umaru umbar umbra umbro umman umong umour umran un-go unama unamo unara unarm unaru unbag unban unbar ungag ungar ungma ungon ungra ungum ungur unman unnam unnao unnau unnun unnur unona unoor unorn unrar unrra unrug unrun unurn uorga uraan uraba uraga urago uran- urana urano urban urbar urgun urman uroob urour urram urrao uruan urubu uruma uumaa uuuuu