d-rod d-rok ddddd ddruk dguok do-do dodon dodoo dodro doggo dogon dokdo dokuo dondo donon donor doodo dooku doong doorn dorno dorog doron dorud doruk doung dounk douro drog- drogo drong dronk drood droog drook droon droug drouk droun drugu drung drunk du-ku duddo dudok dudon dudou duduk dugon dukku dukun dundo dungu dunno dunod dunun duong durno durok duron gnugo go-go go-on go-oo goddo godno godon godor gogok gogon gogro gondo gongo gonnn gonno gono- goodg goodo goong goord gordo gorgo gorno gorod gorun gound goung gounn gourd grgdn grgur grodd grogg grokk grond grong gronk grono grood grook groon groud groun grrrr grund grunk guddu gudok gudur gukgo gundu gungu gunnr gurko guroo gurro gurun gurur k-gun knokk knork knorr knoud knurr ko-ko kodok kodur kogon kogro kogun kokko kokor kokou kokur kondo kongo kongu konno konnu konro konur koogu koonu koord koorn kooru korgu korku korng korno koron koror korro koruk korun koudo kouno krnuo krodo kronk kroon kroun krunk kruun kudou kudur kugur kukko kukok kukur kund- kundo kundu kungu kunku kunur kurgo kurku kurud kuruk ndogo ndour nduru ngoko ngong ngoro ngudu ngugu nguru nnooo no-do no-go no-no nogod nokko nokon non-u nondo nonno noonu noord nordo norok noron norro norun nu-nu nudur nunon nunun nuoro nuruk nurun o-dog oddur odour odudu oduro ognon ogogo ogron ogugu okkur okoro okrog okrug okuku okuru ongod ongon ongud onond onoon onorn onour ooooo ordon ordro orgon orgun ornon orodo orono orrgo oruku oruro oudon ouoro ourno ro-ro rodok rodon rodor rogno rokkk rokon rondo rongo rongu ronk- ronko ronno ronok roodu roond roong rouko round roung rudkk rudno rudok rundu rungu runo- runon u-god ugong ugro- ugrug ukodo ukong ukuug un-go undog undug undun undur ungod ungok ungon ungud ungur unkur unnun unnur unoor unorn unrug unrun unurn urdog urduk urgun urkun urnok urour uuork uuuuu