-tree b-e-d bbbee bcced bd-re be-er bebed beber bedde bedee beder bedet beebe beede beerd beete beppe berbe berde berec bered beret berre berte betee beter betre bett- bette bre-x brece bredd brede bredt breed breer breet brerd brere brett bretx brrrr btc-e btr-d btr-t c-p-c c-tec ccccc ccett cdppb cebec ceber cebpb cebpd cebpe ceded ceder cedex cedr- cedre ceede ceere cepet cerc- cerce cerec cered cerer ceret cerre certe cetpd cette cpctc crebe crece crede creed creep creer crepe crept crete cteep ctree cttee ddddd debce debed deber debet debrc debte decet dedde dedee deder deece deede deepc deepe deepp deere depbt depce depex derbe derce derde dered derpt derre deter detre dette drdre dredd drede dreed dreep drepe drere dxdxd e-dee ebbed ebber ebbet ebert edder eddre edere edred eeeee eeped eepee eerde eperc epptb erbbe erber erdec erdre erect erede erept erere erred erte erter etete etext etree etter exced excpt exect execx exede exept exert exper exptr exred exter extre p-dcb p-rep pcept pcert pctct pebre pedee peece peere peert peete pepee peppe pept- perce perde perec perer peret perre perte petbe peter petr- petre pette pexec prece prede prepd prete ptcrb pter- ptere ptprb ptprc ptprd ptpre ptprr ptprt rebbe rebec reber rebet recce reced recep recet recpt rect- recte redbd redde reder redex reece reede reepe reere repec repet reppe reprt reptd rerde rere- reree reret reted retee reter retex rette rexer rtext t-rex tbtbt teber tebet tectb teder teepe teerd tepee tepet terce teret terex terre tert- teter tetex tetr- tette texed texrd texte treed treer treet trepp trept trere trete trett ttttt xbxrx xceed xebec xedre xerte xetec xetex xexex xpect xtext xtree