-tree c-cor c-tec ccccc ccell ccett cclef ccrcl ccrel cctrl ceco- ceele ceelo ceere cefor celco celer cell- celle cello celo- celte ceoce ceoor ceorl cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe ceto- cette cfler clcff cleco cleef cleer cleet clefe cleft clerc clere clete cleto clett cloff cloof cloor cloot clore clort clote co-co cocc- cocce cocco coceo cocle cocol cocto coel- coelo coete cofer coffe cofre cole- colee colef colel coleo coler colet colfe coll- colle collo colo- color colre cooee cooer coole coolo coore coote corce core- coree corel corer corfe corfo coro- corol corot corre corrl corte corto cotel coter cotle cott- cotte cotto crece creel creer creft crele crell creo- creot crete croce croco croft croll crooe crool croot crore crote crott crrel ctcfl ctree ctrlc ctrol cttee eccle ecoff ecole ecolo ectfe ecto- ector ectot eeeee eelco eeler efere efetf effer effet efore eftel efter elcor elcot elect eleet elele eleo- eleot ellel eller ellet elloe eloee eloff elole eloor elore eloro elote elrec eltro eofor eorre ercol erect erere eroor erore eroto errol error erte ertel erter etete etoll etool etoro etree ettel etter ettle fclef feele feeor feere fefor felce felet felle felte feltt feoff feole ferce ferel feret ferle ferlo ferr- ferre ferro ferte fetel feter feto- fetor fette flect fleer fleet flere flero flert flete flett flocc floor flore floro flote floto focer folco folet folle follo foole foore foote force fore- forel foreo foret forro forte forto fotte freel freer freet frere frett froot frore frote ftlee ftrtt lecce lecco leece leeco leell leeof leere leert leffe lelle lerer leroc lerot letot letre lette letto loco- locro lofer loffe lofte loler lollo lolol looce looer looft loore loote lorel loreo lorer loret lorre lotec lotof lotor lotte lotto ltcol o-fer ocelo ocftc ocllo ocoee ocote ocree octet octo- octol octor oeco- oelet oerel oerle offer offof offre offto ofoto oftel ofter oleo- olere olleo oller oltet oltre oo-er oocre ooooo orcet oreco orell oreo- orere orero orfeo orfoe orfor orlec orlet oroco oroer orret orter ortet ortoo otell otelo otere otero otoce otole otolo ototo otter r-co- rcolo recce recco recet rect- recte recto reece reefe reeft reere refco refel refer refet reffe reffo relee relet rello relot relte rere- reree reret retee retel reter retro rette retto ro-ro rocco rocor roell roero rofel roffe rofor roleo rolfe rolfo rollc rolle rollo rooer roofe rooft roole roore roote rorer rotel roter rotfl rotle roto- rotol rotor rotot rotte rotto tcell teele teell tefe telce telco tele- telec teleo teler tell- telle tello telo- teoco teolo teotl terce terco teret teror terre terro tert- tetel teter tetle tetr- tetro tette tlell tlett tocco toco- toece toefl toeof toerr toeto tofet toffo tofol tofor tofte toler tolet tolle tollo toloo tolor toole toolt toore torce torel toreo toret torre torro torte torto totel toter totle toto- totoe totoo totte treco treer treet trefe treff trele trere trete trett troco troee trofe troff troft troll trott ttttt