-tree c-tec ccccc ccell ccett cclef ccrcl ccrel cctrl ceele ceere celer cell- celle celte cerc- cerce cerec cerer ceret cerre certe cette cfler clcff cleef cleer cleet clefe cleft clerc clere clete clett crece creel creer creft crele crell crete crrel ctcfl ctree ctrlc cttee eccle ectfe eeeee eeler efere efetf effer effet eftel efter elect eleet elele ellel eller ellet elrec erect erere erte ertel erter etete etree ettel etter ettle fclef feele feere felce felet felle felte feltt ferce ferel feret ferle ferr- ferre ferte fetel feter fette flect fleer fleet flere flert flete flett freel freer freet frere frett ftlee ftrtt lecce leece leell leere leert leffe lelle lerer letre lette recce recet rect- recte reece reefe reeft reere refel refer refet reffe relee relet relte rere- reree reret retee retel reter rette tcell teele teell tefe telce tele- telec teler tell- telle terce teret terre tert- tetel teter tetle tetr- tette tlell tlett treer treet trefe treff trele trere trete trett ttttt