-tree eeeee eeler ef-tu efere efetf effer effet efore eftel efter efuru efutu eleet elele eleo- eleot eleut ellel eller ellet elloe ellul eloee eloff elole eloor elore eloro elote elout eltro elulu eluru elute eofor eorre erere eroor erore eroto errol error errtu erte ertel erter etete etoll etool etoro etour etree ettel etter ettle eturu euell euler eurel euro- eurre feele feeor feere fefor felet felle felte feltt feoff feole ferel feret ferle ferlo ferr- ferre ferro ferte fetel feter feto- fetor fette feuer feule feute fleer fleet flere flero flert flete flett fleur floor flore floro floru flote floto flour flout fluff fluo- fluor flure flurr flurt flute folet folle follo foole foore foote fore- forel foreo foret forro forte forto forur fotte fotur fouee fouel fouet foule foure fouro freel freer freet frere frett freur froot frore frote frute fruto ftlee ftrtt fu-fu fuero fulle fullf fullo furel furo- furor futur leell leeof leere leert lefeu leffe lefou leful leleu lelle lerer lerot letot letre lette letto letur leuro lofer loffe lofou lofte loler lollo lolol looer looft loore loote lorel loreo lorer loret lorre lorut lotof lotor lotru lotte lotto louer loule loure louro lufre lufte lulle lulte lulul lurer lurue lute- luteo luter lutol lutte lutto o-fer oelet oerel oerle offer offof offre offto ofoto ofour oftel ofter oleo- olere olleo oller ollur olotu olour oltet oltre oo-er ooooo orell oreo- orere orero orfeo orfeu orfoe orfor orful orlet oroer orolu orout orret orter ortet ortoo oruro orutu otell otelo otere otero otole otolo ototo otour otter ottur otulu oture ouert oullo ouoro oure- ourol outer outof outre outro outto reefe reeft reere refel refer refet reffe reffo refut relee relet rello relot relte relue rere- reree reret retee retel reter retro rette retto reuel reuer reuet reule reute ro-ro roell roero rofel roffe rofor roleo rolfe rolfo rolle rollo rooer roofe rooft roole roore roote rooue rorer rotel roter rotfl rotle roto- rotol rotor rotot rotte rotto rouer rouet roufe roule roull roure route routt ruele ruell ruere ruete ruffe ruffo rufo- rufol ruler rullo ruter rutle rutte rutul ruule ruutu teele teell tefe tele- teleo teler teleu tell- telle tello telo- teolo teotl teret tereu teror terre terro tert- teruo tetel teter tetle tetr- tetro tette teuto tlell tlett toefl toeof toerr toeto tofet toffo tofol tofor tofte toler tolet tolle tollo toloo tolor tolu- toole toolt toore torel toreo toret torre torro torte torto tortu torue torul totel toter totle toto- totoe totoo totte touel toule toull toure touro toute treer treet trefe treff trele trere trete trett treut troee trofe troff troft troll trott troue troul trout truel truer truff trule trull truro trute ttttt tuelf tuell tuelt tuero tuffe tufte tulet tulfo tulle tulor tulou tuotu turel turet turle turot turre turro turtu turul turut tutee tutel tuteo tutle tutor tutte tutto tuuru uelfe ufere ufofu ullet ullur ulteo ultre ululu uluru uouee urelu ureo- urour urtel urter urtlu urutu uter- utero utole utro- utror utter uttur uturu ututo uuuuu