-tree bbbee bcell be-er bebel beber becel beche beebe beech beele beete beeth beher behet behle belce belch belec belee belet bellb belle berbe berec bereh berel beret berhe berle berre berte berth betch betee betel beter bethe betle betre bett- bette bheel bheer bhele bhtec blech bleer bleet blehr blere blete brece brech breel breer breet brell brere breth brett brrrr btc-e btech btr-t c-tec ccccc ccell ccett ccrcl ccrel cctrl cebec ceber cech ceche cecht ceele ceere celeb celer cell- celle celte cerc- cerce cerec cerer ceret cerre certe cette chech cheel cheer cheet chehr chel- chelb chele chell chere cherl chert chete cheth chett chher cleer cleet clerc clere clete cleth clett crebe crece creel creer crele crell crete crrel ctree ctrlc cttee ebber ebbet ebble ebell eberl ebert eccle echte ecthr eeeee eeler eetch ehret elche elect eleet elele ellel eller ellet elrec erbbe erber erech erect erere erte ertel erter erthe etche etete ethel ether etree ettel etter ettle h-e-b he-he hebbe hebe- hebel heber heble heche hecht hect- hecte heele heere heete hehte heler helle helre helte helth herce herel herle herre herte herth hertl hetch heter hethe hette hheth hhhhh hrcel hrere hthrt htree lebce lebec lebel leber lebet lecce leche leece leech leell leere leert lehel lehre lelle lerch lerer letbe letch lethe letre lette lhtec rebbe rebec rebel reber rebet recce recet reche recht rect- recte reece reech reere reerh reeth reher rehet relee relet relte rere- reree reret retch retee retel reter rethe rette rhett tbtbt tcell teber tebet tecch teche tectb teech teele teell teeth tehee telce tele- telec teler tell- telle terce teret terre tert- tetch tetel teter tethe tetle tetr- tette thebe thec- thect theeb theel theer thele ther- there therl thete theth thre- three thret tlell tlett tllbr treer treet trele trere trete trett ttttt