nouna noura nroff nu-nu nuabu nubao nubar nubra nughu nuhuh nunan nunga nunna nunon nunun nuoro nurar nurga nuroa nurra nurun o-bon o-r-b oagar oaror obaba obang obara obhor oboga obora oboro obrab ofafa offof offon offun ofgab ofono ofora oforn ofour ofuna oggar oghab oghur ognon ogogo ogron oguaa ogugu ogura oh-oh ohaba ohana ohara oharu ohfoo ohfun ohoba ohorn ohour ohrob ohura onaga onano onaon onara ongar ongha ongon onhbo onoba onoff onoon onora onorn onour onran oonga ooooh ooooo oorah oraba orana orang oraon orara orban orfar orfor organ orgon orgun orhan ornan ornon ornua orobo oroha orona orono oroua orrgo oruga oruro ouara ouona ouoro ouran ourba ourno ra-ra raaba raaff raagu raaor rabab rabah raban rabba rabha rabon rabor rabou rabun rafah rafar raffa rafha ragah ragan ragga raghu ragno ragon ragoo rahab rahan rahna rahon ranau ranga rangh rango rangu ranho ranna ranno rannu ranon ranua raouf raraf rarbg raron raugu rauna raung rauno rauon rhaon rharb rhoga rhona rhoon ro-ro roana roann robab robar robbo robo- robon robor robun robur roffa rofor rogan rogha rogho rogna rogno rohan rohff rohob rohru rohun ronan ronga rongo rongu ronno rooah rooba roong rorbu rorra rouba rough roung roura rraga rragb ruaha ruana ruang ruano rubab ruban rubba rubof rubon rubor rubra ruffo rufo- rugao rugha rughh ruhab ruhnu ruhub runan runga rungu runo- runof runon ruran uaroo ubahn ubobo uboga ufana ufgau ufofu uforb ugboa ugoff ugong ugro- ugrug uh-oh uh-uh uhhoh uhhuh uhura uhuru un-go unafr unara unaru unbag unban unbar unfun unfur ungag ungar ungon ungra ungur unhug unnao unnau unnun unnur unona unoor unorn unrar unrra unrug unruh unrun unurn uorga uraan uraba uraga urago uran- urana urano urban urbar urgun urhan uroob urour urrao uruan urubu uuuuu