-tree b-e-d bbbee bd-re be-er bebed beber bebti bedde bedee beder bedet bedid bedri beebe beede beedi beerd beeri beete beibi beide beidi beier beird beire beite berbe berde bered berei beret berid berie berit berre berri berte berti betee beter betid betie betre bett- bette betti bibbe biber bibie bibri bidde bided bider bidet bidri biebe bierd biere bieri biert bieti biide birde birie bited biter bitit bitte bitti bredd brede bredi bredt breed breer breet breid breit brerd brere brett bribe bride bridi brier brite britt brrrr btr-d btr-t ddddd debbi debed deber debet debie debir debit debte dedde dedee deder dedie dedir dedit deede deedi deere deidt deite derbe derbi derde dered derib derre deter detie detre dette dibri didee didie didit diebe dieri diete dired direr dirie diter ditib dittd ditti drdre dredd drede dreed dreid dreie drere dride dried drier drite e-dee ebbed ebber ebbet ebbie ebeid ebert ebibe ebird edder eddie eddir eddit eddre edere edidi edred eeeee eerde eerie eetti eider eidet eirie eiter eitri erbbe erber erdre erede erere erier erite erred erte erter etete etite etree etter ettie i-bet i-bid ibert ibeti idbet idied iebet ieiri ierei iette iiiee iiiii iitti irbid irbit irete irid- iride irite irrit itbit itdid itete itire itter ittre ittti rbied rebbe reber rebet rebid rebit redbd redde reddi reder redid redie redit reede reere reeti reide reird rerde rere- reree reret rerir reted retee reter retie rette ribbi riber ribet ribie rided rider riede rieti ririe tbeti tbird tbtbt teber tebet tebi- teder tedie teerd teide teiid teret terre terri tert- teter tetr- tetri tette ti-ti tibbi tiber tibet tidde tided tider tiede tieit tiere tieri tired tiree tirer tiret tirit titer titii titre titte titti treed treer treet treib treid treie treit trere treri trete trett tri-d tribe tride trieb tried triei trier triet trit- trite tritt ttttt