-tree c-met c-tec ccccc ccett cecum ceere cegge cemec cemre cerc- cerce cerec cerer ceret cerge cerre certe cetme cette cmere crece creem creer cregg creme crete cretu creu- creue cruce cruet crume crure ctcum ctree cttee cumec cumm- curce curer curet curre curug cutcu cutee cuter ecume eeeee eemct egger egrem egret emcee emeer emere emerg emert emmer emmet emtec emtee emure erceg erect erege erem- erere errtu erte erter ertug eruct etete etree etter eturu eucre eum-u eurre geere geert geete gegge gemer gemme gemre gerce germe gerre gertt gerum getee getem geter getme gette grece grecu greer greet grege gregg greme grete grett greut grgur grmec grrrr grume grure gruut guce gucer gueme guere gumer gumme gurge gurre gurum gurur gutte mccue mcgee mcmug mcree mecum meece meemu meere meete meger megre memer merce mereg merer meret merge merre merte merur meteg meter metr- metre mette metur meuer meure meute mmccc mmmcc mmmmm mreru mrmet mt-tc mt-te mt-tg mt-tm mt-tr mt-tt mtgee mtree mtume muctc mucum mucur mugcr muger mugur mumcu mumme mummu muret mureu murre murru murum murut muter mutet mutum recce recet rect- recte recue recur recut reece reege reeme reere regec regem reger reget regge regme regtt regur regut remee remer remet remue rere- reree reret rerum retee retem reter retrg rette reuer reuet reume reute rmutt rucer ruegg ruere ruete ruger ruget rugge rumer rummu rurec ruter rutte ruutu tecum teege teeme teemu tegre teguc tegur terce terem teret tereu terge tergu terme terre tert- teter tetr- tette teuge tgttm treer treet treg- treme trere trete trett treut truce truer trugg trume trute ttttt tucet tuctu tucum tugce tumut turem turet turre turtu turut tutee tutte tuuru u-cee ugrug umeer umeme ureme urger urgut urter uruce urucu urutu uter- utmer utrum utter uttur uturu uuuuu