-tree c-p-c c-tec ccccc ccett ceere cegep cegge cepet cerc- cerce cerec cerer ceret cerge cerre certe cette cpctc crece creep creer cregg crepe crept crepu crete cretu creu- creue creup cruce cruet crupe crure cteep ctree cttee cueup cuper cupr- curce curer curet curre curug curup cutcu cutee cuter cutup eccup eeeee eepee egger egret eperc epure erceg erect erege erept erere errtu erte erter ertug eruct erupt etete etree etter eturu eucre eurre geere geert geete geeup gegge gerce gerre gertt getee geter gette getup grece grecu greer greet grege gregg grepe grete grett greup greut grgur grrrr grure gruut guce gucer guere gurge gurre gurur gutte p-rep pcept pcert pctct peece peege peere peert peete pepee peppe pept- pepup perce perec perer peret perge perre perte peruc perur petcu peter petr- petre petru pette petur peuce peure pgrep prece prepg prete pruce prute pter- ptere ptprc ptpre ptprg ptprr ptprt ptpru puett puget pupet puppe purce puree purer purge purre purte puter putre putt- putte puttu putup re-up recce recep recet recpt rect- recte recue recur recut reece reege reepe reere regec reger reget regge regtt regur regut repec repeg repet reppe reprt reput rere- reree reret retee reter retrg rette reuer reuet reute rucer ruegg ruere ruete ruger ruget rugge rupee ruper rurec ruter rutte ruutu teege teepe teeup tegre teguc tegur tepee tepet tepeu teppu terce teret tereu terge tergu terre tert- teter tetr- tette teuge treer treet treg- trepp trept trere trete trett treut truce truer trugg trupt trute ttttt tucep tucet tuctu tugce tupee turet turre turtu turup turut tutee tutte tuuru u-cee ugrug upc-e upcut upeet upper upput upter urger urgut urter uruce urucu urupe urutu uter- utter uttur uturu uuuuu