b-reel b-tree bbbbbb beblur beebee beefer beeler beeter beetle befell beflee befree befret belber beleft belett beller bellet belleu bellue beltel belter beltre belull belute berbee berber bereel bereet bereft berere berrer berret bertel bertre berube betell betelu betere betete betrue bettee bettel better bettle betutu beurre bleere blefte blublu bluett blurre bluter brebel breefe breere brette breuer brubru bruel brufut brulee bruree brutel bubber bubble bubele bububu bueler buellt buffel buffer buffet buffle bulbel bulbul bull-e bullee buller bullet bultel bulter burbet burble burbur burell burfee burler burlet burree burrel burrer burret burtle burutu butere butler buttel butter buttle ebbert eberle ebrulf eburru eebree eeuler efeler effere effete effutu efreet efter- elbert elbeuf eleele ellett erbree erfurt errett ettutu eubule euller eutere feeble feeler felber feller felter feltre ferber ferfel ferfer ferlut ferrel ferrer ferret ferrur fertee ferter ferule fetter fettle feture feuter fleble fleete fletre fleure fluber flurre flurte fluter flutte freele frefre frelte fretel frette freure fterer fterre fubble fueler fuerte fuffle fuller furber furfur furler furlet furrer furrfu furtle futrel futret futter future lebert lebret leeful leelee leerer leetle leffel leftbe lefter lefull lerret letter lettre lubber lubefu luffer lufful luller lurulu lutter luttre r-tree re-let rebble rebell rebtel rebuff rebulb rebute reefer reeffe reeler reeuel refeel refeet refeff refell refelt refert refete reflee reflet reflue refret refter refuel refurb refurl refute releef reller relleu rereel rerule reteer reteet retell retere retree retret rettel retter rettur retube returf returu reuele reuere reuler reulle reuter reutte rubbee rubbel rubber rubble rubell rubutu rueful ruelle rufete ruffer ruffet ruffle rufter ruller rurutu ruttee rutter ruttle rutube t-tree t-tube teebee teetee teeter telefe telele telete teleut telfer tellee teller tellur terbuf terete terrel terrer terret terter tertre teruel tetele tetete tetter teufel teutul trbble trebel treble trebur treete trefet trefle trefte tretee trette truble truett trufel trufle trufte truful trulle tubber tubble tubful tubul- tubule tuelft tuelle tufele tuffet tuffle tufter turbel turbet turble turfel turfer turlet turrel turret turtle turtur tururu tutele tuteur tutter tuttle tuttul tuttut tuuelf u-tube ufreet ureltu ureter urette uruffe utelle uteute