d-dot d-rod d-rok ddddd ddruk dhoot dhuhr do-do dodoo dodro dohuk dokdo dokhu dokuo doodo dooku dooth doout dordt dorot dorth dorud doruk dotoo dotto douro douth drood drook drott drouh drouk drout dtour du-ku duddo dudok dudou duduk dukku dukot durok durtu duruh hhhhh hhour hhtdd ho-ho ho-oh hoddu hodhr hodod hodur hohot hokku hookt hoord hoort hordt horod horro horru hortd horth horto hothr hotot hotto hourd houtu hthrt hudud hudur huhuh hukok huork hurko hurok hurtt hurtu hutor hutto huttu huuru khodr khoku khood khoro khour khurd khuru khutu khuur ko-ko kodok kodur kohut kokko kokor kokot kokou kokur kokut koord kooru korku koror korro korth kortu koruk kotor kotto kottu kotur koudo kouth kouto krodh krodo kroot krout krtok kruth kruto kudou kudur kukko kukok kukur kurku kurth kurud kuruk kutho kutkh kuttu kutur oddur odour odudu oduro oh-oh oh-ok ohour ohrot okkur okoho okoro okrut okuku okuru ooooh ooooo ordro orkut orodo orout orth- ortho ortok ortoo oruku oruro orutu othou othur otoku ototo otour otrok ottur ouoro outdo outro outto rhod- rhodo ro-ro rodok rodor rohod rohru rokkk rokot rokto roodu rookh rotho rotko roto- rotor rotot rotto rouko routh routt rt-rk rudkk rudok ruthu ruuth ruutu tdrkh thoro thorr thort thoru thoth thour thout throd throo throt throu thurd thurt thuru to-do to-ho todok todor tohku tohot tokdo tokko toko- tokod tokor tokuo tokur tookh toord tooth tordu torht torok torro torto tortu torud toto- totok totoo touho tourd touro trhdr trood troth trott trout trudo truro truth ttttt tudor tudou tudur tukur tuotu turko turku turok turot turro turtu turut tutku tutor tutto tuuru uh-oh uh-uh uhdoh uhhoh uhhuh uhuru ukodo urduk urkut urour urutu utkhu utro- utror uttur uturu ututo uuork uuuuu