d-dot d-rod ddddd do-do dodon dodoo dodro dondo donon donor donot donut doodo doorn doout dordt dorno doron dorot dorud dotoo dotto dount douro drood droon drott droun drout dtour dturn duddo dudon dudou dundo dunno dunod dunun duont durno duron durtu ndour nduru nnooo no-do no-no nodto non-u nondo nonno nonot noonu noord noort nordo noron norro nortt norun notdo notno noto- noton notto nourt ntntd ntoro nu-nu nudur nunon nunun nuoro nurun nuton oddur odont odour odudu oduro onond onont onoon onorn onoto onour onout onto- ontoo ontur ooooo ordon ordro ornon ornot orodo orono orout orton ortoo oruro orutu otono ototo otour ottur oudon ouoro ourno outdo outon outro outto ro-ro rodon rodor rondo ronno ronto roodu roond roto- roton rotor rotot rotto rotun round rount routt rudno rundu runo- runon runto ruutu t-nut tntnt to-do todor tondo tondu tono- tonod tonto toord tordu toron torro torto tortu torud torun toto- toton totoo tourd tourn touro trond trono trood troon trott trout trudo truro ttttt tudor tudou tudun tudur tundu tunon tuotu turn- turno turnt turnu turon turot turro turtu turut tutor tutto tutun tuuru undun undur unnun unnur unnut unoor unorn unrun unurn urour urutu utro- utror uttur uturn uturu ututo uuuuu