d-rod d-rok ddddd ddrmm ddruk ddrum dhoom dhuhr dhumm do-do dodoo dodro dohuk dokdo dokhu dokuo doodo dooku dorud doruk dorum doumu douro drmom drom- dromo drood drook droom drouh drouk droum drumm du-ku duddo dudok dudou duduk dukku duomo durok duruh durum hhhhh hhour hkhrm ho-ho ho-oh hoddu hodhr hodod hodur hohum hokku hokum homo- homok hoord horod horom horro horru hourd hudud hudur huhuh hukok humor humur huork hurko hurm hurok hurum huuru khodr khoku khood khoro khoum khour khurd khuru khuur ko-ko kodok kodom kodur kohmo kokko kokor kokou kokum kokur komku koord kooru korku korom koror korro koruk koudo krodh krodo kromo krumm kudou kudum kudur kuhmo kukko kukok kukur kumdo kumru kumud kumuk kurku kurud kuruk mhorr mmhmm mmmmm mo-do modok modom modum modur mohor mohur mokko mokro mokuk mokum mookk mooro mordu mormo moror morou morro morum mrmom mrorr muddu mukho mukur mummu mumok murdo murdu murko murom muror murrh murro murru murud muruk murum o-hum oddur odoom odour odudu oduom oduro oh-oh oh-ok ohmmm ohour ohrum okkur okoho okoro okuku okuru omoro omuku oohdm ooooh ooooo ordro orkom orm-d ormod ormur orodo oromo orrum oruku oruro ouoro rhod- rhodo ro-ro rodok rodor rohod rohru rokkk roodu rookh roomu rouko roumm rudkk rudok rummo rummu rumor ruomu uh-oh uh-uh uhdoh uhhoh uhhuh uhuru ukodo umhum umour umudu urduk urour uuork uuuuu