-tree c-p-c c-tec ccccc ccell ccett ccrcl ccrel cctld cctrl ceded cedel ceder cedr- cedre ceede ceele ceere celde celer cell- celle celte cepet cerc- cerce cerec cered cerer ceret cerre certe cetpd cette cleed cleer cleet clepe clept clerc clere clete clett cpctc crece crede creed creel creep creer crele crell crepe crept crete crrel cteep ctree ctrlc cttee dcell ddddd decet dedde dedee deder deece deede deele deepc deepe deepp deere deled delee delle depce depel derce derde dered derpt derre deter detre dette drdre dredd drede dreed dreel dreep drell drepe drere e-dee eccle edder eddre edell edere edler edred eeeee eelde eeled eeler eeped eepee eerde elded eldee elder elect eleet elele ellel eller ellet elpee elper elrec eperc erdec erdre erect erede erept erere erpel erred erte ertel erter etete etree ettel etter ettle lecce ledce ledee leder ledet leece leede leell leere leert lelep lelle lepel leper lepet leppe lepre lept- lered lerer letre lette p-rep pcell pcept pcert pctct pdlct pecel pedee pedel peece peele peell peere peerl peert peete peled pelee peler pelet pelle pepee pepel peple peppe pept- perce perde perec perel perer peret perle perre perte peter petr- petre pette plede pleep pleet pletd plete prece prede prell prelp prepd prepl prete pter- ptere ptprc ptprd ptpre ptprr ptprt rcled rdllr recce reced recep recet recpt rect- recte redde redel reder reece reede reepe reere reled relee relet relte repec repel repet reple reppe reprt reptd rerde rere- reree reret reted retee retel reter rette tcell teder teeld teele teell teepe teerd telce telde tele- telec telep teler tell- telle tepee tepet terce teret terre tert- tetel teter tetle tetr- tette tlell tlett tpler treed treer treet trele trepp trept trere trete trett ttttt