-tree c-met c-p-c c-tec ccccc ccett ceere cemec cemex cemre cepet cerc- cerce cerec cerer ceret cerre certe cetme cette cmere cpctc crece creem creep creer creme cremp crepe crept crete cteep ctree cttee eeeee eemct eepee emcee emeer emere emert emmer emmet empee empte emtec emtee eperc erect erem- erept erere erte erter etete etext etree etter excpt exect execx exeem exeme exept exert exmet exper exptr exter extre mcmxc mcree mcrpc meece meere meete memer memex merce merer meret merre merte meter metr- metre metrx mette mexer mmccc mmmcc mmmmm mpret mrmet mt-tc mt-te mt-tm mt-tp mt-tr mt-tt mtepe mtree p-rep pcept pcert pctct peece peere peert peete pemex pepee peppe pept- perce perec perer peret perre perte peter petr- petre pette pexec prece preem preme premp prete pter- ptere ptprc ptpre ptprm ptprr ptprt recce recep recet recpt rect- recte reece reeme reepe reere remee remer remet remex repec repet reppe reprt rere- reree reret retee retem reter retex rette rexer rtext t-rex tcpmp teeme teepe tempe tempt tepee tepet terce terem teret terex terme terre tert- teter tetex tetr- tette texte treer treet treme tremp trepp trept trere trete trett ttttt xerem xerte xetec xetex xexex xmmer xpect xterm xtext xtree