d-rod d-rok ddddd ddrmm ddruk ddrum dguok do-do dodoo dodro doggo dokdo dokuo doodo dooku dorog dorud doruk dorum doumu douro drmom drog- drogo drom- dromo drood droog drook droom droug drouk droum drugu drumm du-ku duddo dudok dudou duduk dukku dumog duomo durok durum go-go go-oo goddo godor gogok gogro gomor gomur goodg goodo goord gordo gorgo gorod gourd grgur grodd grogg grokk gromo grood grook groom groud grrrr grumo guddu gudok gudur gukgo gummo gurko guroo gurro gurum gurur ko-ko kodok kodom kodur kogro kokko kokor kokou kokum kokur komku koogu koord kooru korgu korku korom koror korro koruk koudo krodo kromo krumm kudou kudum kudur kugur kukko kukok kukur kumdo kumru kumud kumuk kurgo kurku kurud kuruk m-dog mkuog mmmmm mo-do modok modom modum modur mogod mogok mokko mokro mokuk mokum moogo mookk mooro mordu mormo moror morou morro morum mrmom mrorr muddu mudug mugur mukur mummu mumok murdo murdu murgo murko murom muror murro murru murud muruk murum o-dog oddur odoom odour odudu oduom oduro ogogo ogugu okkur okoro okrog okrug okuku okuru omoro omuku ooooo ordro orkom orm-d ormod ormur orodo oromo orrgo orrum oruku oruro ouoro ro-ro rodok rodor rokkk roodu roomu rouko roumm rudkk rudok rummo rummu rumor ruomu u-god ugro- ugrug ukodo ukuug umour umudu urdog urduk urour uuork uuuuu