-tree e-fit eeeee eerie eetti efere eferi efetf effer effet effie effio efore efrei efter eieio eirie eiter eitri eofor eorre erere erier eriff erio- erite eroor erore eroto error erte erter etete etio- etite etoro etree etter ettie feeor feere fefor feier feoff feret ferie ferio ferit ferr- ferre ferri ferro ferte feter feti- fetii fetir feto- fetor fette fieee fieri fiero fifer fifie fiore fiori firee firei firer firie firit firre fitit fitof fitor fitri fitte fitto foeti foir- foire foore foote footi fore- foreo foret forio forit forro forte forti forto fotte freei freer freet freir freit frere frett frier frite frito fritt froit froot frore frote ftrtt ieiri ierei ieroe iette if-- ifere iffet ifrit ifttt iiiee iiiii iitti ioffe ioooi ioooo iorio iotit iotti irete irite irori irrit itero itete itfet itfit itfor itire itoff itter ittoo ittre ittti o-fer oeiro offer offie offir offit offof offre offto ofori ofoto ofter oirot oitti oo-er ooioo ooooo oorie oreo- oreoi orere orero orfei orfeo orfoe orfor orito oroer orret orter ortet ortoo otere oteri otero otori ototo otter ottir ottoi reefe reeft reere reeti refer refet reffe reffo refit reiff reoti rere- reree reret rerir retee reter retie retro rette retto ri-fi riefe rieti rifer riife ririe ro-ro roero roffe rofor roiot roite rooer roofe rooft roore roote rorer roter rotie roto- rotor rotot rotte rotti rotto tefe teffi teito teret terif teroi teror terre terri terro tert- teter tetr- tetri tetro tette ti-ti tieit tiere tieri tiero tieto tiffe tiore tiree tireo tirer tiret tirit tiro- tiroi titer titii titof titre titte titti toeit toeof toerr toeto tofet toffo tofit tofor tofte toore toreo toret torii torio torit torre torri torro torte torti torto toter toti- totie toto- totoe totoo totte treer treet trefe treff treie treif treit trere treri trete trett triei trier triet trife trior trit- trite trito tritt troee trofe troff troft troie trott ttttt