-tree c-cor c-dot c-tec ccccc ccett cduce ceco- ceddo ceded ceder cedor cedr- cedre cedro ceede ceedo ceere ceoce ceoor cerc- cerce cerco cerdo cerec cered cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette co-co co-ed cocc- cocce cocco coceo cocto cocur codco codde codec coded coder codo codru coete coeur coode cooed cooee cooer coord coore coote corce corde core- cored coree corer coreu coro- corod corot corre corte corto coted coter cott- cotte cotto cottu couco coude couer courd coure court couru couto coutu crece crede credo creed creer creo- creot crete cretu creu- creue croce croco crode crodo crood crooe croot crore crote crott croud crout cruce crude crudo cruet cruor crure ctree cttee cudde cudot cuero cueto cuoco cuore curce cured curer curet curre curro curto cutco cutcu cutee cuter cutro cutto d-cru d-dot d-rod dcore ddddd decet decor decur dedde dedee deder dedur dedut deece deede deere deore deoro derce derde dered dero- derre derro derue deter detoo detre dette detuo detur deuce deure deut- deuto do-do doced docer docet dodec dodoo dodro doerr dooce doodo doore doote doout dorce dordt dored doree doret dorot dorre dorte dorud doted doter dotoo dotto douce doude douer doure douro doute drdre dredd drede dreed drere drode drood drote drott droue drout druce drude dtour ducor duddo duded duder dudou duduc duere duerr duete dueto duett dured duree durer duret duroc durre durte durtu dutte e-dee e-otd ecord ecto- ector ectot edder eddoe eddre edeo- edere edocr edoor edott edred educe educo educt eeeee eerde eorre erdec erdoc erdor erdre erdut erect erede erere erode erodr eroor erore eroto erred error errtu erte erter eruct etete etoro etour etree etter etude eturu eucre euro- eurre occur ocoee ocote ocree octet octo- octor odder oddur odeco odeto odeur odore odour odudu odure oduro oeco- oo-er oocre ooooo orcet order ordet ordoc ordre ordro orduc oreco oredo oreed oreo- orere orero oroco orodo oroer orout orret orter ortet ortoo oruce oruro orutu otere otero otoce ototo otour otter ottur oture ouder ouedo ouert ouoro ource ourde oure- outdo outed outer outre outro outto r-co- recce recco reced recet rect- recte recto recue recur recut redco redde reder redoc redor redot redur reece reede reere reord rerde rere- reree reret reted retee reter retro rette retto reuer reuet reute ro-ro rocco rocor rocou rodde roded rodeo roder rodoc rodor roero roode roodu rooer roore roote rooue rorer roted roter roto- rotor rotot rotte rotto roude rouer rouet roure route routt rucer ruder ruede ruere ruete rurde rurec ruter rutte ruutu tecou teder teerd teoco teodo terce terco teret tereu teror terre terro tert- teruo teter tetr- tetro tette teuto to-do tocco toco- tocut toder todor toece toerr toeto toode tooed toord toore torce torde tordu tored toreo toret torre torro torte torto tortu torud torue toted toter toto- totoe totoo totte tourd toure touro toute treco treed treer treet trere trete trett treut troco trode troee trood trott troue trout truce truco trude trudo trued truer truro trute ttttt tucet tuctu tuder tudor tudou tudre tudur tuero tuotu turco turet turoc turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru u-cee ucero ucode udder udert uouee urdee uredo ureo- urour urter uruce urucu urutu uter- utero utro- utror utter uttur uturu ututo uuuuu