-tree bbbee be-er beber bebti beebe beeri beete beeth beher behet behie behir beibi beier beihe beire beite beith berbe bereh berei beret berhe berie berit berre berri berte berth berti betee beter bethe betie betre bett- bette betti bheer bheri bibbe biber bibie bibri biebe biere bieri biert bieti biher birie birth biter bitit bitte bitti breer breet breit brere breth brett bribe brier brite brith britt brrrr btr-t ebber ebbet ebbie ebert ebibe eeeee eerie eetti ehire ehret eirie eiter eithe eitri erbbe erber erere erier erite erith erte erter erthe etete ether etite etree etter ettie h-e-b h-iib he-he hebbe hebe- hebei heber hebri heeii heere heete hehte heihe heire heith heiti herei herie herit herre herte herth herti heter hethe hette hheth hhhhh hi-hi hibhi hibit hibri hier- hiree hirer hirth hithe hitit hitte hrere hthrt htree i-bet ibert ibeti iebet ieiri ierei iethe iette iherb ihere ihite iiiee iiiii iitti irbit irete irite irrit itbit itete ithee ither itire itter itthe ittre ittti rebbe reber rebet rebit reere reerh reeth reeti reher rehet rehit rehri rehti reith rere- reree reret rerir retee reter rethe retie rette rhett ribbi riber ribet ribie rieth rieti rihte ririe rithe rithi tbeti tbtbt teber tebet tebi- teeth tehee tehri teret terre terri tert- teter tethe tetr- tetri tette thebe theeb theei theer theie their theit ther- there theri thete theth thibi thier thire thiri thite thre- three thret thrie ti-he ti-hi ti-ti tibbi tiber tibet tieit tiere tieri tieth tiree tireh tirer tiret tirit tirth titer tithe tithi titii titre titte titti treer treet treib treie treit trere treri trete trett tribe trieb triei trier triet trit- trite tritt ttttt