-tree eeeee eeler eleet elele eleo- eleot ellel eller ellet elloe eloee elole eloor elore eloro elote eltro eorre erere eroor erore eroto errol error erte ertel erter etete etoll etool etoro etree ettel etter ettle leell leere leert lelle lerer lerot letot letre lette letto loler lollo lolol looer loore loote lorel loreo lorer loret lorre lotor lotte lotto oelet oerel oerle oleo- olere olleo oller oltet oltre oo-er ooooo orell oreo- orere orero orlet oroer orret orter ortet ortoo otell otelo otere otero otole otolo ototo otter reere relee relet rello relot relte rere- reree reret retee retel reter retro rette retto ro-ro roell roero roleo rolle rollo rooer roole roore roote rorer rotel roter rotle roto- rotol rotor rotot rotte rotto teele teell tele- teleo teler tell- telle tello telo- teolo teotl teret teror terre terro tert- tetel teter tetle tetr- tetro tette tlell tlett toerr toeto toler tolet tolle tollo toloo tolor toole toolt toore torel toreo toret torre torro torte torto totel toter totle toto- totoe totoo totte treer treet trele trere trete trett troee troll trott ttttt