lohur lolla lollo lolol loobu loofa loola loora loral lorax lorra louga lough louro loxo- lubao lubba lubla lubra lubur lufax luffa lugal lugar lugau lugol lulab lulal lulla lulua lulul luoba luogu lurgg luxor luxur o-r-b oagar oaror oaxal obaba obala obara obhor oblog oboga obolo obora oboro obrab ofafa ofall ofalu offal offof ofgab oflag ofora ofour oggar oghab oghur ogogo oguaa ogugu ogura oh-oh ohaba ohalo ohara oharu ohfoo ohlau ohoba ohour ohrob ohura olala olaru olhao olhar ollur olour ooola ooooh ooooo oorah oraal oraba oralb orara orbal orfar orfor orful orgal orgul orlah orobo oroha orolu oroua oroux orrgo oruga oruro ouara oulfa oullo ouoro oural ourax ourba ourol oxal- ra-ra raaba raaff raagu raaor rabab rabah rabal rabba rabha rabor rabou rabul rafah rafal rafar raffa raffl rafgl rafha ragah ragga raghu ragoo rahab rahal rahul ralla rallo raouf raoul raraf rarbg raugu raxar rfala rharb rhoga ro-ro roall robab robar robbo robo- robor robur roffa rofor rogal rogha rogho rogla rohal rohff rohob rohru rolag rolao rolfo rolga rolla rollo rolua rolux rooah rooba roral rorbu rorra rouba rough roull roura rraga rragb ruaha ruala rubab rubba rubof rubor rubra ruffo rufo- rufol rugal rugao rugha rughh rugla ruhab ruhla ruhub rullo rural uaroo ubobo uboga ufgau ufofu uforb ugala ugboa uggla ugoff ugola ugro- ugrug uh-oh uh-uh uhaul uhhoh uhhuh uhura uhuru ulala ulalu ulbra ullah ullal ullar ullfa ulloa ullur ulula ululu uluru uolba uorga uraba uraga urago uralo urbar urgal urlar urola uroob urour urrao urubu uugla uuuuu x-bar x-box x-fab x-gal xaaga xagar xaraf xball xbxrx xfrog xorro xoxox xuluf