nu-nu nuabu nuala nubao nubar nubra nugal nulga nulla nullo nunan nunga nunna nunon nunun nuoro nural nurar nurga nurla nurlu nuroa nurra nurun o-bon o-lan o-r-b oagar oaror obaba obala obang obara oblog oblon oboga obolo obora oboro obrab oggar ognon ogogo ogron oguaa ogugu ogura olala olana olang olanu olaru olgun ollon ollur olona olour onaga onall onano onaol onaon onara ongar ongon onoba onoon onora onorn onour onran oonga ooola ooooo oraal oraba oralb orana orang oraon orara orbal orban orgal organ orgon orgul orgun orlan orlon ornan ornon ornua orobo orolu orona orono oroua orrgo oruga oruro ouara oullo oulon oulun ouona ouoro oural ouran ourba ourno ourol ra-ra raaba raagu raaor rabab rabal raban rabba rabon rabor rabou rabul rabun ragan ragga ragno ragon ragoo ralla rallo ralon ranal ranau ranga rango rangu ranlo ranna ranno rannu ranon ranua raoul rarbg raron raugu rauna raung rauno rauon ro-ro roall roana roann robab robar robbo robo- robon robor robun robur rogal rogan rogla rogna rogno rolag rolao rolga rolla rollo rolon rolua ronal ronan ronga rongo rongu ronno rooba roong roral rorbu rorra rouba roull roung roura rraga rragb ruala ruana ruang ruano rubab ruban rubba rubon rubor rubra rugal rugao rugla rulan rullo rulon runan runga rungu runo- runon rural ruran uaroo ubobo uboga ugala ugboa uggla ugola ugong ugro- ugrug ulaan ulala ulalu ulang ulano ulbra ulgan ullal ullar ulloa ullur ulnar ulno- ulong ulula ululu uluru un-go unara unaru unbag unban unbar ungag ungar ungon ungra ungul ungur unnao unnau unnun unnur unona unoor unorn unrar unrol unrra unrug unrun unurn uolba uorga uraan uraba uraga urago uralo uran- urana urano urban urbar urgal urgun urlar urnal urola uroob urour urrao uruan urubu uugla uuuuu