de-err dedute deeded deedee deeder defete defeud deffer defrut defter defude derere derfde derrer derure deterr detete detter deuter dreder dudder duerer dueted duetee duette duffed duffer dufter durfee duttee effere effete effude effutu efreet efter- erfurt errett ettutu eutere fedder federd feeded feedee feeder feered ferder ferede ferfer ferred ferrer ferret ferrur fertee ferter fetter feture feuded feudee feuder feuter frefre frette freude freure fterer fterre fudder fuerte fuffed furder furfur furred furrer furrfu futret futter future r-tree redded redder reddur redere redred redted redure reeded reeder reefed reefer reeffe refeed refeet refeff refert refete reffed refret refter refute reteed reteer reteet retere retree retret retted retter rettur returf returu reuere reuter reutte rudder rudrur rufete ruffed ruffer ruffet rufter rurutu rutted ruttee rutter t-tree tedded tedder tedure teeder teetee teeter terete terrer terret terter tertre tetede tetete tetter treder treete trefet trefte tretee trette truett trufte tudder tuffet tufted tufter turfed turfer turret turtur tururu tuteur tutted tutter tuttut ufreet urdeur ureter urette uruffe uteute