-tree bbbee be-er bebel beber beebe beele beete belee belem belet bellb belle bembe bemer bemet berbe berel beret berle berme berre berte betee betel beter betle betre bett- bette bleer bleet blere blete breel breem breer breet brell breme bremm brere brett brmmm brrrr btr-t ebber ebbet ebble ebell eberl ebert eeeee eeler eleet elele eleme ellel eller ellet elmer elmet embee embel ember emble emeer emele emell emere emerl emert emmer emmet emtee emtel erbbe erber erem- erere erte ertel erter etete etree ettel etter ettle lebel leber lebet leell leeme leere leert lelle lemel lemer lemme lerer letbe letem letme letre lette m-tel mbebe mbere mbret mebbe meble meele meell meere meete melee melem melet mell- melle melte membe memel memer merel merer meret merle merre merte metel meter metle metr- metre mette mlete mmmmm mrlee mrmet mt-lb mt-te mt-tm mt-tr mt-tt mtree mttle rebbe rebel reber rebet reeme reere relee relet relte remee remel remer remet rere- reree reret retee retel retem reter rette tbtbt teber tebet teele teell teeme tele- telem teler tell- telle tembe temel terem teret terme terre tert- tetel teter tetle tetr- tette tlell tlett tllbr tlmer treer treet trele treme trere trete trett ttttt