-tree bbbee bcell be-er bebel beber becel beebe beeft beele beete beffe belce belec belee belef belep belet bellb belle beppe berbe berec berel beret berle berre berte betee betel beter betle betre bett- bette bleep bleer bleet bleft blere blerp blete brece breef breel breer breet brell brere brett brrrr btc-e btr-t c-p-c c-tec cbeff cbeft ccccc ccell ccett cclef ccrcl ccrel cctrl cebec ceber cebpb cebpe ceele ceere celeb celer cell- celle celte cepet cerc- cerce cerec cerer ceret cerre certe cette cfler clcff cleef cleer cleet clefe cleft clepe clept clerc clere clete clett cpble cpcfc cpctc crebe crece creel creep creer creft crele crell crepe crept crete crrel ctcfl cteep ctree ctrlc cttee ebber ebbet ebble ebell eberl ebert eccle ectfe eeeee eeler eepee efere efetf effer effet eftel efter elect eleet elele ellel eller ellet elpee elper elrec eperc epptb eptfe erbbe erber erect erept erere erpel erte ertel erter etete etree ettel etter ettle fclef febel feble febre feele feere felce felet felle felte feltt ferce ferel feret ferle ferr- ferre ferte fetel feter fette flect fleer fleet flere flert flete flett frcpc freel freep freer freet frere frett ft-lb ftlee ftrtt lebce lebec lebel leber lebet lecce leece leell leere leert leffe leftb lelep lelle lepel leper lepet leppe lepre lept- lerer letbe letre lette p-rep pcell pcept pcert pctct pebre pecel peece peele peell peere peerl peert peete pelee peler pelet pelle pepee pepel peple peppe pept- perce perec perel perer peret perle perre perte petbe peter petr- petre pette plebe pleep pleet plete prece preef preff prell prelp prepl prete ptcrb pter- ptere ptprb ptprc ptpre ptprf ptprr ptprt rebbe rebec rebel reber rebet recce recep recet recpt rect- recte reece reefe reeft reepe reere refel refer refet reffe relee relet relte repec repel repet reple reppe reprt rere- reree reret retee retel reter rette rperf tbtbt tcell teber tebet tectb teele teell teepe tefe telce tele- telec telep teler tell- telle tepee tepet terce teret terre tert- tetel teter tetle tetr- tette tlell tlett tllbr tpler treer treet trefe treff trele trepp trept trere trete trett ttttt