-er eee eef eeo eer eet ef- efe eff efo efr eft eo- eoe eof eoo eor eot eou ere erf ero err ert eru ete etf eto etr ett etu eu- eue euf eur eut fee fef feo fer fet feu ffe fff ffo ffr fft ffu foe fof foo for fot fou fre frf fro frr frt fru fte ftf fto ftr ftt ftu fue fuf fuo fur fut fuu oee oef oeo oer oet of- ofe off ofo ofr oft ofu oo- oof ooo oor oot or- ore orf oro orr ort oru ot- ote otf oto otr ott otu ou- oue ouf ouo our out re- ree ref reo rer ret reu rfe rff rfo rfr rft rfu roe rof roo ror rot rou rrf rrr rrt rru rte rtf rto rtr rtt rtu rue ruf ruo rur rut ruu te- tee tef teo ter tet teu tfe tff tfo tfr tft tfu to- toe tof too tor tot tou tre trf tro trr trt tru tte ttf tto ttr ttt ttu tue tuf tuo tur tut tuu uee uef uer uet ufe uff ufo ufr uft ufu uoe uoo uor uot ur- ure urf uro urr urt uru ute utf uto utr utt utu uue uur uut uuu

eeee eefe eero eete eetu efeo efet efor eft- eftu eore eoto erer eret erft eroe eroo erre erro ertu erur etee eter etfe etoe etre etro ette etto ettu euer eur- eure euro eurt feer feet fefe feff fefo feof fere fero ferr fert feru fete fetr fett fetu ffee ffff ffrr fftf foer fofo foof foot for- fore foro forr fort fote foto fott four fout free freo fret froe frot frou frue fter fuet fuff fufu fuor fur- fure furo furr furt fute futo futu o-eo oere oeuf ofer off- offe offo offr offu ofor ofre ooer ooff oooo oore oort ore- oreo orer orfe orff orfu oro- oroe orof oror orot orro orte orto otee oter oto- otoe otof otoo otor otre otro otte otto ottu otur ouer oufe ouff our- oure ouro ourt out- oute outo ouu- reef reet refe reff refr reft refu reof reot reou rere rero rert reru rete reto retr rett reue reuf reut reuu rfef roer roet rofe roff rofo roof roor root rore roro rort roru rote roto rotr rott roue rouf rout rrrr rtee ruer ruet rufe ruff rufo ruft rure ruro ruru rute ruto rutt rutu teef teer teet teff teft teor ter- tere terf tero terr teru tete teto tetr tett tetu teut tfot toee toer toet toff tofo toft tofu toof toor toot tore torf toro torr tort toru tote toto totr tott tour tout tre- tree tref treo tret treu trfr troe troo trot trou trte trtr true trut truu tteo tter ttff ttoe tttt tuer tuet tufe tuff tufo tuft tufu tuor ture turf turo turr turt turu tute tuto tutt tutu tuuo ufer uffe uofo uor- uore ure- uret urfe urff urft uro- uroo urre urte urur urut uter utfo utor utto uttu uutf uuuu

-tree eeeee ef-tu efere efetf effer effet efore efter efuru efutu eofor eorre erere eroor erore eroto error errtu erte erter etete etoro etour etree etter eturu euro- eurre feeor feere fefor feoff feret ferr- ferre ferro ferte feter feto- fetor fette feuer feute foore foote fore- foreo foret forro forte forto forur fotte fotur fouee fouet foure fouro freer freet frere frett freur froot frore frote frute fruto ftrtt fu-fu fuero furo- furor futur o-fer offer offof offre offto ofoto ofour ofter oo-er ooooo oreo- orere orero orfeo orfeu orfoe orfor oroer orout orret orter ortet ortoo oruro orutu otere otero ototo otour otter ottur oture ouert ouoro oure- outer outof outre outro outto reefe reeft reere refer refet reffe reffo refut rere- reree reret retee reter retro rette retto reuer reuet reute ro-ro roero roffe rofor rooer roofe rooft roore roote rooue rorer roter roto- rotor rotot rotte rotto rouer rouet roufe roure route routt ruere ruete ruffe ruffo rufo- ruter rutte ruutu tefe teret tereu teror terre terro tert- teruo teter tetr- tetro tette teuto toeof toerr toeto tofet toffo tofor tofte toore toreo toret torre torro torte torto tortu torue toter toto- totoe totoo totte toure touro toute treer treet trefe treff trere trete trett treut troee trofe troff troft trott troue trout truer truff truro trute ttttt tuero tuffe tufte tuotu turet turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru ufere ufofu uouee ureo- urour urter urutu uter- utero utro- utror utter uttur uturu ututo uuuuu

e-four effere effete effoff effore effort effutu efreet efter- eototo erfurt eroto- errett errour etoeot ettore ettutu euroto eururo eutere feeror feetof feofor ferfer ferrer ferret ferro- ferrur fertee ferter fetter feture feuter foerre foeto- foetor foofoo foofur footer forout forrer forrot fortee forter forure foufou fourer fourof fourou fourto fouter foutre freeof freeto frefre frette freure froofe fterer fterre fuerte fufore furfur furore furour furrer furrfu futret futter future futuro oerter oferre offeet offutt oftfor oofotr oooooo orrour ottoor ouerre ouffet outfor outour outter outtro r-tree reefer reeffe refeet refeff refert refete refoot refret refter refute reroof reroot reteer reteet reteoo retere retore retort retour retree retret retro- retrot retter rettur returf returu reuere reuour reuter reutte roofer rooter rootof rootte rorter rotour rotout rotrou rotter roture rouffe router routot rufete ruffer ruffet rufter rurutu rutour ruttee rutter t-tree teeoff teetee teeter terete terreo terrer terret terror terrot terrou terter tertre tetete tetter to-fro toeout toetoe toffee tofore toofer tooter tootoo torero torfer torfou tororo torret tortor tortou tortue totoro totrot totter tou-fu toufee touffe tourer touret tourou tourte touter toutou toutuo treeof treete trefet trefor trefot trefte tretee trette trofeu troffe trotro trotte trueto truett trufte tuffet tufter tuotuo turfer turret turtur tururu tuteur tutour tutter tuttut ufreet ureter urette urouer uroure uruffe utero- uteute utroor

e-tutor eeeroer errorof eurofor eurofot feoffee feoffer feoffor feretto ferrere ferrero ferrour