-tree c-cor c-tec ccccc ccell ccett ccrcl ccrel cctrl ceco- ceele ceelo ceere celco celer cell- celle cello celo- celte ceoce ceoor ceorl cerc- cerce cerco cerec cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette cleco cleer cleet clerc clere clete cleto clett cloor cloot clore clort clote cloue clour clout clue- cluer clurr clute clutt co-co cocc- cocce cocco coceo cocle cocol cocto cocur coel- coelo coete coeur cole- colee colel coleo coler colet coll- colle collo colo- color colre colur cooee cooer coole coolo coore coote corce core- coree corel corer coreu corlu coro- corol corot corre corrl corte corto cotel coter cotle cott- cotte cotto cottu cotul couco couer coule coull coult coure courl court couru couto coutu crece creel creer crele crell creo- creot crete cretu creu- creue creul croce croco croll crooe crool croot crore crote crott croul crout crrel cruce cruel cruet crule crull cruor crure ctree ctrlc ctrol cttee ctulu cuero cueto culet culle cullu culot culto culur cuoco cuore curce curel curer curet curle curll curlo curlu curre curro curto cutco cutcu cutee cuter cutle cutro cutto cuuel eccle ecole ecolo ecto- ector ectot eeeee eelco eeler elcor elcot elect eleet elele eleo- eleot eleut ellel eller ellet elloe ellul eloee elole eloor elore eloro elote elout elrec eltro elulu eluru elute eorre ercol erect erere eroor erore eroto errol error errtu erte ertel erter eruct etete etoll etool etoro etour etree ettel etter ettle eturu eucre euell euler eurel euro- eurre lecce lecco leece leeco leell leere leert leleu lelle lerer leroc lerot letot letre lette letto letur leuc- leuce leuco leuro loco- locro loler lollo lolol looce looer loore loote lorel loreo lorer loret lorre lorut lotec lotor lotru lotte lotto louce louer loule loure louro ltcol lucee lucet lucre lucur lulec lulle lulte luluc lulul lurer lurue lute- luteo luter lutol lutte lutto occur ocelo ocllo ocoee ocote ocree octet octo- octol octor ocul- oculo oeco- oelet oerel oerle oleo- olere olleo oller ollur olotu olour oltet oltre oo-er oocre ooooo orcet oreco orell oreo- orere orero orlec orlet oroco oroer orolu orout orret orter ortet ortoo oruce oruro orutu otell otelo otere otero otoce otole otolo ototo otour otter ottur otulu oture ouert oullo ouoro ource oure- ourol outer outre outro outto r-co- rcolo recce recco recet rect- recte recto recue recur recut reece reere relee relet rello relot relte relue rere- reree reret retee retel reter retro rette retto reuel reuer reuet reule reute ro-ro rocco rocor rocou roell roero roleo rollc rolle rollo rooer roole roore roote rooue rorer rotel roter rotle roto- rotol rotor rotot rotte rotto rouer rouet roule roull roure route routt rucer rucul ruele ruell ruere ruete ruler rullo rurec ruter rutle rutte rutul ruule ruutu tcell tecou tecul teele teell telce telco tele- telec teleo teler teleu tell- telle tello telo- teoco teolo teotl terce terco teret tereu teror terre terro tert- teruo tetel teter tetle tetr- tetro tette teuto tlell tlett tocco toco- tocut toece toerr toeto toler tolet tolle tollo toloo tolor tolu- toole toolt toore torce torel toreo toret torre torro torte torto tortu torue torul totel toter totle toto- totoe totoo totte touel toule toull toure touro toute treco treer treet trele trere trete trett treut troco troee troll trott troue troul trout truce truco truel truer trule trull truro trute ttttt tucet tuctu tuell tuelt tuero tulce tulet tulle tulor tulou tuotu turco turel turet turle turoc turot turre turro turtu turul turut tutee tutel tuteo tutle tutor tutte tutto tuuru u-cee uccel uccle ucell ucero uclue ulcer ulcot ullet ullur ulteo ultre ululu uluru uouee urcel urelu ureo- urour urtel urter urtlu uruce urucu urutu uter- utero utole utro- utror utter uttur uturu ututo uuuuu