bdoor blood bloor blorb bluff blufr blurb blurr bo-bo bobr bodd- bodor boffo boldf boldo boldu boll- bollo bollu boold boord booru borbo bordo boro- borod boroo borou borro borul boudu boul- bould boulo bourd brobo brodd brodo broll brolo brood brool broud brrrr brud- bruff brull buddu budur buffo bulb- bull- bulou bulul buord burol buroo burro burru burud d-rod ddddd do-do do-ol dobro dodol dodoo dodro dofor dollo dollu dolor doodo dorff dorud doufu doull douro drbob drobo droff droll drood droof drool droul dub-l dubbo dubul duddo dudou dufur dullu ffold flodd flood floor floro floru floud flour fludd fluff fluo- fluor flurb flurr fodor follo foodb foord ford- fordo forro forud forur fould fourb fourd fouro frodo frood froud fu-fu fuddu fullf fullo furbo furo- furor furud fuudo lobbo lobo- lobor loddo lodro lofou lollo lolol loobu loord lourd louro lubur luddu lulul o-r-b obodo obolo oboro obudu oddur odolo odoul odour odudu odulf oduro offof ofold ofour ollur olord olour ooooo ordro orfor orful orobo orodo orold orolu oruro oullo ouoro ourol rdllr ro-ro robbo robo- robor robur rodbo rodl rodor rofor rolfo rollo roodu rorbu roull rubof rubor ruffo rufo- rufol rullo u-dub ubobo udol udoll ufofu uforb ullur ululu uluru uroob urour urubu uuuuu