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