d-rod ddddd ddrmm ddrum do-do dodon dodoo dodro domon domun dondo donon donor donum doodo doorn dorno doron dorud dorum doumu douro drmno drmom drom- dromo drood droom droon droum droun drumm duddo dudon dudou dundo dunno dunod dunum dunun duomo durno duron durum mdrnr mmmmm mo-do modom modon modum modur mondo monno mono- monod monon monor monro moorn mooro mordn mordu mormo moron moror morou morro morum morun mound mourn mrmom mrorr muddu mudon mudun mummu mumun mundo mundu munro murdo murdu murom muron muror murro murru murud murum ndour nduru nnooo no-do no-no nodum nommo nomo- nomom non-u nondo nonno noonu noord nordo norm- noron norro norum norun nu-nu nudum nudur nunon nunun nuoro nurmo nurun oddur odoom odour odudu oduom oduro omoon omoro omron onmod onmun onond onoon onorn onour ooooo ordon ordro orm-d ormod ormur ornon orodo oromo orono orrum oruro oudon ouoro ourno rmnmn ro-ro rodon rodor romon rondo ronno roodu roomu roond roumm round rudno rummo rummu rumor rundu runo- runon ruomu umour umudu undun undur unnun unnur unoor unorn unrun unurn urour uuuuu