-tree eeeee eeler efere efetf effer effet efore eftel efter eleet elele eleo- eleot ellel eller ellet elloe eloee eloff elole eloor elore eloro elote eltro eofor eorre erere eroor erore eroto errol error erte ertel erter etete etoll etool etoro etree ettel etter ettle feele feeor feere fefor felet felle felte feltt feoff feole ferel feret ferle ferlo ferr- ferre ferro ferte fetel feter feto- fetor fette fleer fleet flere flero flert flete flett floor flore floro flote floto folet folle follo foole foore foote fore- forel foreo foret forro forte forto fotte freel freer freet frere frett froot frore frote ftlee ftrtt leell leeof leere leert leffe lelle lerer lerot letot letre lette letto lofer loffe lofte loler lollo lolol looer looft loore loote lorel loreo lorer loret lorre lotof lotor lotte lotto o-fer oelet oerel oerle offer offof offre offto ofoto oftel ofter oleo- olere olleo oller oltet oltre oo-er ooooo orell oreo- orere orero orfeo orfoe orfor orlet oroer orret orter ortet ortoo otell otelo otere otero otole otolo ototo otter reefe reeft reere refel refer refet reffe reffo relee relet rello relot relte rere- reree reret retee retel reter retro rette retto ro-ro roell roero rofel roffe rofor roleo rolfe rolfo rolle rollo rooer roofe rooft roole roore roote rorer rotel roter rotfl rotle roto- rotol rotor rotot rotte rotto teele teell tefe tele- teleo teler tell- telle tello telo- teolo teotl teret teror terre terro tert- tetel teter tetle tetr- tetro tette tlell tlett toefl toeof toerr toeto tofet toffo tofol tofor tofte 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 trefe treff trele trere trete trett troee trofe troff troft troll trott ttttt