oggar oghur ognon ogogo ogoja ogron oguaa ogugu ogura oh-oh ohana ohara oharu ohchr ohorn ohour ohura ojuju onaga onano onaon onara onch- onco- ongar ongha ongon onjon onoon onora onorn onour onran onuca oojah oonga ooooh ooooo oorah orach orana orang oraon orara orcan orcha orcon organ orgon orgun orhan orjan ornan ornon ornua oroch oroco oroha orona orono oroua orrca orrgo oruch oruga orujo oruro ouara oucho ouona ouoro ouran ourno r-co- ra-ra raagu raaor racah racan racch racha racon ragah ragan ragga raghu ragno ragon ragoo rahan rahja rahna rahon rajac rajah rajan rajao rajar rajca rajjo rajju rajna rajoa rajon rajun rajur ranac ranau ranca ranch ranco ranga rangh rango rangu ranho ranna rannc ranno rannu ranon ranua raron rauch rauco raugu rauna raung rauno rauon rccar rhaon rhoga rhona rhoon ro-ro roach roana roann rocar rocca rocco rocha rocoa rocor rocou rogac rogan rogha rogho rogna rogno rohan rohru rohun rojan ronan ronco ronga rongo rongu ronja ronno rooah roong rorra rouch rough roung roura rraga rragc ruach ruaha ruana ruang ruano rugao rugha rughh ruhnu rujan runan runch runcu runga rungu runo- runon ruran u-con uacrr uaroo uccja ucgun uchan uchar uchoa uchon uchuu uconn ugong ugro- ugrug uh-oh uh-uh uhhoh uhhuh uhura uhuru ujung un-go unaco unara unaru uncon uncor ungag ungar ungon ungra ungur unhug unjha unnao unnau unnun unnur unona unoor unorn unrar unrra unrug unruh unrun unurn uorga uraan urach uraga urago uran- urana urano urgun urhan urooj urour urrao uruan urucu uuuuu