-tree e-fit eeeee eerie eetti efere eferi efetf effer effet effie efrei efter eirie eiter eitri erere erier eriff erite erixx erte erter etete etext etite etree etter ettie exert exite exter extre feere feier feret ferie ferit ferr- ferre ferri ferte feter feti- fetii fetir fette ffxii fieee fieri fifer fifie firee firei firer firie firit firre fitit fitri fitte fixer fixie fixit freei freer freet freex freir freit frere frett frier frite fritt frixe ftrtt ieiri ierei iette if-- ifere iffet ifrit ifttt iiiee iiiii iitti irete irite irrit itete itext itfet itfit itire itter ittre ittti reefe reeft reere reeti refer refet reffe refit refix reiff rere- reree reret rerir retee reter retex retie rette rexer ri-fi riefe rieti rifer riife ririe rtext t-rex tefe teffi teret terex terif terre terri tert- teter tetex tetr- tetri tette texte tfifx ti-ti tieit tiere tieri tiexi tiffe tiree tirer tiret tirit titer titii titre titte titti tixte treer treet trefe treff treie treif treit treix trere treri trete trett triei trier triet trife trit- trite tritt ttttt xerif xerte xetex xexex xfire xtext xtree xxiii xxxii xxxix