b-r-k bbook bdoor blood blook bloor blorb blurb blurr bo-bo bobko bobok bobr bodd- bodor bokko bokod bokok bokor boldo boldu bolko boll- bollo bollu bolok boluk booko boold boord booru borbo bordo borko borku boro- borod borok boroo borou borro borul boudu bouko boul- bould boulo bourd brobo brodd brodo broll brolo brood brook brool broud brouk brrrr brud- brull buddu budko budur bukk- bukor bulb- bull- bulok bulou bulul buord burol buroo burro burru burud buruk d-rod d-rok ddddd ddruk do-do do-ol dobok dobro dodol dodoo dodro dokdo dokuo dollo dollu dolor doodo dooku dorud doruk doull douro drbob drobo droll drood drook drool drouk droul du-ku dub-l dubbo dubul duddo dudok dudou duduk dukku dullu duluk durok k-b-d k-rob kbool kludd ko-ko kobol kobru kobuk kobul kodok kodur kokko kokor kokou kokur kolbu koldo koldu kollo kollu kolob kolol kolur koolu koord kooru korbo korku korol koror korro koruk koudo koulo krodo kroll krull kubok kubul kudlu kudou kudur kukko kukok kukur kullo kullu kulob kulor kulul kulur kurbu kurku kurlu kurud kuruk ldodk lobbo lobo- lobor loddo lodro lokur lollo lolol loobu loord loruk lourd louro lubok lubur luddu lukko lukok lukou lulul o-r-b obodo obolo oboro obrok obudu oddur odolo odoul odour odudu oduro okkur okobo okoro okubo okuku okuru ollur olord olour ooooo ordro orlok orobo orodo orold orolu oruku oruro oullo ouoro ourol rdllr ro-ro robbo robo- robor robur rodbo rodl rodok rodor rokkk rollo rolok roodu rorbu rouko roulk roull rubor rudkk rudok rullo u-dub ubobo udol udoll ukobu ukodo ullur ululu uluru urduk uroob urour urubu uuork uuuuu