-tree eeeee eeler eleet elele eleo- eleot eleut ellel eller ellet elloe ellul eloee elole eloor elore eloro elote elout eltro elulu eluru elute 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 leell leere leert leleu lelle lerer lerot letot letre lette letto letur leuro loler lollo lolol looer loore loote lorel loreo lorer loret lorre lorut lotor lotru lotte lotto louer loule loure louro lulle lulte lulul lurer lurue lute- luteo luter lutol lutte lutto oelet oerel oerle oleo- olere olleo oller ollur olotu olour oltet oltre oo-er ooooo orell oreo- orere orero 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 outre outro outto reere relee relet rello relot relte relue rere- reree reret retee retel reter retro rette retto reuel reuer reuet reule reute ro-ro roell roero roleo rolle rollo rooer roole roore roote rooue rorer rotel roter rotle roto- rotol rotor rotot rotte rotto rouer rouet roule roull roure route routt ruele ruell ruere ruete ruler rullo ruter rutle rutte rutul ruule ruutu teele teell 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 toerr toeto 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 trele trere trete trett treut troee troll trott troue troul trout truel truer trule trull truro trute ttttt tuell tuelt tuero tulet tulle tulor tulou tuotu turel turet turle turot turre turro turtu turul turut tutee tutel tuteo tutle tutor tutte tutto tuuru ullet ullur ulteo ultre ululu uluru uouee urelu ureo- urour urtel urter urtlu urutu uter- utero utole utro- utror utter uttur uturu ututo uuuuu