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