-tree c-p-c c-tec ccccc ccett ceded ceder cedr- cedre ceede ceere cepet cerc- cerce cerec cered cerer ceret cerre certe cetpd cette cpctc crece crede creed creep creer crepe crept crete cteep ctree cttee ddddd decet dedde dedee deder deece deede deepc deepe deepp deere depce derce derde dered derpt derre deter detre dette drdre dredd drede dreed dreep drepe drere e-dee edder eddre edere edred eeeee eeped eepee eerde eperc erdec erdre erect erede erept erere erred erte erter etete etree etter p-rep pcept pcert pctct pedee peece peere peert peete pepee peppe pept- perce perde perec perer peret perre perte peter petr- petre pette prece prede prepd prete pter- ptere ptprc ptprd ptpre ptprr ptprt recce reced recep recet recpt rect- recte redde reder reece reede reepe reere repec repet reppe reprt reptd rerde rere- reree reret reted retee reter rette teder teepe teerd tepee tepet terce teret terre tert- teter tetr- tette treed treer treet trepp trept trere trete trett ttttt