-tree eeeee eeler egger egret eleet elegu elele eleut elge elgee elger ellel eller ellet ellul elulu eluru elute erege erere errtu erte ertel erter ertug etete etree ettel etter ettle eturu euell euler eurel eurre geere geert geete gegge gelee geler gelle gelru gelug gerle gerre gertt getee geter gette ggulu gleer gleet glegg glele glere glete glett gluer glut- glute glutt greer greet grege gregg grell grete gretl grett greut grgur grrrl grrrr gruel grure gruut guell guelt guere gugel gugul guler gulet gulle gulte gurge gurle gurlt gurre gurur gutte leell leere leert leger legge leleu lelle lerer lerge letre lette letur leuge llerg luger lugge lugre lulle lulte lulul lurer lurgg lurue lute- luter lutte reege reere regel reger reget regge regle regtl regtt regul regur regut relee relet relte relue rere- reree reret retee retel reter retrg rette reuel reuer reuet reule reute ruegg ruele ruell ruere ruete ruger ruget rugge ruler ruter rutle rutte rutul ruule ruutu teege teele teell tegel tegre tegur tele- teleg teler teleu tell- telle teret tereu terge tergu terre tert- tetel teter tetle tetr- tette teuge tlell tlett treer treet treg- trele trere trete trett treut truel truer trugg trule trull trute ttttt tuell tuelt tulet tulle turel turet turle turre turtu turul turut tutee tutel tutle tutte tuuru uggle ugrug ulger ullet ullur ultre ululu uluru urelu urgel urger urgut urtel urter urtlu urutu uter- utter uttur uturu uuuuu