c-cor ccccc cnnnn cntrc co-co cocc- cocco cocon cocto cocur conco concr connu cono- conon conor contn conto contr contu corno cornu coro- coron corot corto corun coton cott- cotto cottu couco count court couru couto coutu croco croon croot crott croun crout crunt cruor cunco cunt- cunut cuoco curno curro curto cutco cutcu cutno cuton cutro cutto nnooo no-no noct- nocto nocut non-u nonno nonot noonu noort norco noroc noron norro nortt norun notno noto- noton notto nourt nrotc ntoro nu-nu nucor nunon nunun nuoro nurun nuton occur ocorn octo- octon octor onco- onont onoon onorn onoto onour onout onto- ontoo ontur ooooo orcon ornon ornot oroco orono orout orton ortoo oruro orutu otono ototo otour ottur ouoro ourno outon outro outto r-co- ro-ro rocco rocor rocou ronco ronno ronto roto- roton rotor rotot rotto rotun rount routt runcu runo- runon runto ruutu t-nut tntnt tocco toco- tocut tonco tono- tonto toron torro torto tortu torun toto- toton totoo tourn touro troco tronc trono troon trott trout truco truro ttttt tuctu tunon tuotu turco turn- turno turnt turnu turoc turon turot turro turtu turut tutor tutto tutun tuuru u-con uconn uncon uncor uncut unnun unnur unnut unoor unorn unrun unurn urour urucu urutu utro- utror uttur uturn uturu ututo uuuuu