c-cor c-dot ccccc cnnnn cntrc co-co cocc- cocco cocon cocto cocur codco codo codon codru conco concr condo condr connu cono- conon conor contd contn conto contr contu coord corno cornu coro- corod coron corot corto corun coton cott- cotto cottu couco cound count courd court couru couto coutu croco crodo crood croon croot crott croud croun crout crudo crunt cruor cudot cunco cunt- cunut cuoco curno curro curto cutco cutcu cutno cuton cutro cutto d-con d-cru d-dot d-rod dconn 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 ducor ducun duddo dudon dudou duduc dundo dunno dunod dunun duont durno duroc duron durtu ndour nduru nnooo no-do no-no noct- nocto nocut nodto non-u nondo nonno nonot noonu noord noort norcd norco nordo noroc noron norro nortt norun notdo notno noto- noton notto nourt nrotc ntntd ntoro nu-nu nucor nudur nunon nunun nuoro nurun nuton occur ocorn octo- octon octor oddur odont odour odudu oduro oncdr onco- onond onont onoon onorn onoto onour onout onto- ontoo ontur ooooo orcon ordoc ordon ordro orduc ornon ornot oroco orodo orono orout orton ortoo oruro orutu otono ototo otour ottur oudon ouoro ourno outdo outon outro outto r-co- rnctd ro-ro rocco rocor rocou rodoc rodon rodor ronco rondo ronno ronto roodu roond roto- roton rotor rotot rotto rotun round rount routt rudno runcu rundu runo- runon runto ruutu t-nut tntnt to-do tocco toco- tocut todor tonco tondo tondu tono- tonod tonto toord tordu toron torro torto tortu torud torun toto- toton totoo tourd tourn touro troco tronc trond trono trood troon trott trout truco trudo truro ttttt tuctu tudor tudou tudun tudur tundu tunon tuotu turco turn- turno turnt turnu turoc turon turot turro turtu turut tutor tutto tutun tuuru u-con uconn unccd uncod uncon uncor uncut undun undur unnun unnur unnut unodc unoor unorn unrun unurn urour urucu urutu utro- utror uttur uturn uturu ututo uuuuu