bdoor bfrog bo-bo bobr bodd- bodog bodor boffo bogof bogor bogu bogud bogur boord booru borbo bordo borgo borgu boro- borod boroo borou borro boudu bourd bourg brobo brodd brodo brood broud brrrr brud- bruff brugg buddu budur buffo bugoo buord burgo burgu buroo burro burru burud d-rod ddddd do-do dobro dodoo dodro dofor dogbo doggo dogof doodo dorff dorog dorud doufu douro drbob drobo droff drog- drogo drood droof droog droug drugu dubbo duddo dudou dufur fodor fogbo foggo fogou foodb foord ford- fordo forgo forro forud forur fougo fourb fourd fourg fouro frodo frood froud frugo fu-fu fuddu fudog fugro fugug furbo furo- furor furud fuudo go-go go-oo gobbo goddo godor gofor gogro goobo goodg goodo gooff goord gordo gorgo gorod gourd grgur grodd groff grogg grood groof groud grouf grrrr grubb gruff gubbo gubru guddu gudur guroo gurro gurur o-dog o-r-b obodo oboro obudu oddur odour odudu oduro ofdog offof ofgod ofour ogogo ogugu ooooo ordro orfor orobo orodo orrgo oruro ouoro ro-ro robbo robo- robor robur rodbo rodor rofor roodu rorbu rubof rubor ruffo rufo- u-dub u-god ubobo ufofu uforb ugoff ugro- ugrug urdog uroob urour urubu uuuuu