d-dot d-rod ddddd dhond dhoon dhoot dhuhr dhund dhunn do-do dodon dodoo dodro dohrn dondo donho donon donor donot donut doodo doorn dooth doout dordt dorno doron dorot dorth dorud dotoo dotto dount douro douth drood droon drott drouh droun drout dtour dturn duddo dudon dudou duhon dundo dunno dunod dunun duont durno duron durtu duruh hhhhh hhour hhtdd ho-ho ho-oh hoddu hodhr hodod hodur hohot hondo honno honor honud hoond hoord hoorn hoort hordt horno horod horon horro horru hortd horth horto hothr hoton hotot hotto hound hount hourd houtu hthrt hudud hudur huhuh hundt hunth hunut huorn huron hurtt hurtu hutor hutto huttu huuru ndour nduru nnooo no-do no-no nodto noduh nohno nohor nohut non-u nondo nonno nonoh nonot noonu noord noort nordo noron norro north nortt norun notdo noth- notht notno noto- noton notto nourt ntntd ntoro nu-nu nudur nuhuh nunon nunun nuoro nurth nurun nuton oddur odont odour odudu oduro oh-oh ohorn ohour ohrot onhot onond onont onoon onorn onoto onour onout onto- ontoo ontur ooooh ooooo ordon ordro ornon ornot orodo orono orout orth- ortho orton ortoo oruro orutu othon othou othur otono ototo otour ottur oudon ouoro ourno outdo outon outro outto rhod- rhodo rhoon ro-ro rodon rodor rohod rohru rohun rondo ronno ronto roodu roond rotho roto- roton rotor rotot rotto rotun round rount routh routt rthon rudno ruhnu rundu runo- runon runto ruthu ruuth ruutu t-nut thoon thorn thoro thorr thort thoru thoth thour thout throd thron throo throt throu thurd thurn thurt thuru tntnt to-do to-ho todor tohot tondo tondu tono- tonod tonto toord tooth tordu torht toron torro torto tortu torud torun toto- toton totoo touho tourd tourn touro trhdr trond trono trood troon troth trott trout trudo truro truth ttttt tudor tudou tudun tudur tundu tunon tuotu turn- turno turnt turnu turon turot turro turtu turut tutor tutto tutun tuuru uh-oh uh-uh uhdoh uhhoh uhhuh uhuru undun undur unhot unnun unnur unnut unoor unorn unruh unrun unurn urour urutu utro- utror uttur uturn uturu ututo uuuuu