-tree bbbee be-er beber bebic bebti becic beebe beeri beete beibi beice beier beire beite berbe berec berei beret berie berit berre berri berte berti betee beter betie betre bett- bette betti bibbe biber bibic bibie bibri bicer biebe biere bieri biert bieti birie biter bitit bitte bitti brece breer breet breit brere brett bribe brice briec brier brite britt brrrr btc-e btr-t c-tec ccccc cccii ccett cciii ccitt cebec ceber cebit ceci- cecie cecri ceere ceirt cerc- cerce cerci cerec cerer ceret ceric cerie cerre certe cetic cette ciber cibir cicer cietc circe ciric cirie cirr- cirri citec citee citer citie citr- citte crebe crece creer crete cribb cribe crice crier ctree ctrie cttee ebber ebbet ebbie ebert ebibe ecrit eeeee eerie eetti eirie eiter eitri erbbe erber erect erere ericb erice erier eriic erite erte erter etete etite etree etter ettie i-bet ibert ibeti icbrr ice-t iceci iceit icici icier icter ictic iebet iecee ieiri ierei iette iiiee iiiii iitti irbit ircii irece irete irite irrit irtec itbit itete itire itter ittre ittti rcirc rebbe rebec reber rebet rebit recce recet recit rect- recte recti reece reere reeti reice rere- reree reret reric rerir retee reter retie rette ribbi ribce riber ribet ribie ricci ricer rieti ririe rtice tbeti tbtbt teber tebet tebi- tecic tectb terce teret terre terri tert- teter tetr- tetri tette ti-ti tibbi tiber tibet ticci ticer tieit tiere tieri tiree tirer tiret tirit titcr titer titii titre titte titti treer treet treib treie treit trere treri trete trett tribe trice trieb triei trier triet trit- trite tritt ttttt