d-rod d-rok ddddd ddruk dnuop do-do dodon dodoo dodro dokdo dokuo dondo donon donor doodo dooku doorn dorno doron dorud doruk dounk douro dpond dronk drood drook droon droop drop- dropo drouk droun droup drunk du-ku duddo dudok dudon dudou duduk dukku dukun dundo dunno dunod dunun durno durok duron k-p-r k-pop knokk knoop knork knorr knoud knurr ko-ko kodok kodur kokko kokor kokou kokur kondo konno konnu konro konur koonu koord koorn kooru kopru korku korno koron korop koror korpo korro koruk korun korup koudo kouno krnuo krodo kronk kroon kropp kroun krunk krupp kruun kudou kudur kukko kukok kukup kukur kund- kundo kundu kunku kunur kupon kupur kurku kurud kuruk kurup n-p-n ndour nduru nkpor nnooo no-do no-no no-op nokko nokon non-u nondo nonno nonop noonu noord nopun nordo norok noron norro norun nu-nu nudur nunon nunun nuoro nupur nuruk nurun oddup oddur odour odudu oduro okkur okoro okuku okuru onond onoon onorn onour onpop ooooo oopod opodo opoku oppon ordon ordro ornon orodo orono oruku oruro oudon oukup ouoro ourno p-n-p po-on po-po podo- podor pokou pondo ponnu ponor ponup poond poopo poork popon popop poppo popup porn- porno poro- poron porro porur pound prodd pronk proor prop- propn propp propr proud prun- pruno pudor pudur pundo punkd punon punuk puppo purku puro- purok ro-ro rodok rodon rodor rokkk rokon rondo ronk- ronko ronno ronok roodu roond rouko round rprop rudkk rudno rudok rundu runo- runon runup u-pop ukodo ukpor ukrop undun undur unkur unnun unnur unoor unorn unrun unurn up-do upnor uppon uprun urduk urkun urnok urour uuork uuuuu