essse essue estee ester estes estet estre estur estus esure etest etete etree etres etter ettes eturu eurre eurus euser febre feebs feere feers feese feets feres feret ferr- ferre ferse ferte ferus feser fesse fest- feste fests festu feter fetes fette fetus feuer feurs feute freer frees freet frere frese fress frest frets frett freur frust frute ftest ftrtt fu-fu fubbs fubus fuest fuffs furrs furse furst furus fusee fuser fuses fusse fuste fusts fusus futsu futur fuuse rebbe reber rebet rebts rebus rebut reefe reefs reeft reere reese reest refer refet reffe refts refus refut rere- reree reres reret resee reses reset resse reste restr rests resue resus retee reter retes retsu rette retts reuer reuet reuse reuss reute rsssf rsust rubee ruber rubes rubus ruere ruers ruete ruffe ruffs rufus ruses russe ruste rusts rustu ruter rutte ruutu s-bus sebbe sebes sebet seebe seere seers seese seest seesu seete sefer sefes seffe sefte serbs seref serer seres seret serfe serff serfs serre serse serss sert- serte serts serue serut seser seses sesse seste sestu sesue setee seter setse setsf sette setts settu setus setut seuer seure seuss seute sssrb sssss steer stees steet steff stere sterr sters stert stesu stete stets steur strbe streb stree stret streu strrs strub strue strut stube stubs stuer stufe stuff stuft sturb sture sturt stuse stuss stute stuue subbu suber subss subst suere suers suess suest suete suets sueur sufes suffe suffr suffs suftu surer sures surfs surre surte surtr surur surus suser suses susse susus sutee suter sutes sutte suttu tbtbt tbutt teber tebet teebs teers teese teest teets tefe teffs teres teret tereu terre terrs terse tert- tesse teste tests teter tetes tetr- tetsu tette teuts treer trees treet trefe treff trefs trere tres- trese tress trest trete trets trett treus treut trubs trubu truer trues truff truse truss trust trute truus tsebe tsere tsets tsuru tsuur ttest ttttt ttusb tubbs tuber tubes tuffe tuffs tufte tufts turbe turbt turet turfs turre turse turss turst tursu turtu turut tutee tutte tutus tuuru uber- ubers ufere ufeus urbes ursus urter urubu urutu usees users usest usses uster ustur usure usutu uter- utfse utfsf utter uttur utube uturu uuuuu

b-tree bbbbbb bbsers beebee beebes beefer beerse beerst beeste beeter beffes befree befret berbee berber berbes bereet bereft berere berest berets berrer berres berret bersee berset bertes bertre bertus berube berust besbes besbre besert besets besser besses besset bessus bester besure betere betete betrue bettee better bettes betutu beurre beuste brebes breefe breere breese breest breres bresse breste brests brette bretts breuer breust brubru brufut bruree brusse bruste brutes brutus bs-tbs bubber bubbes bububu bueres buetts buffer buffet burbet burbur burets burfee burree burrer burret burser burses burseu bursts bursut burutu busbee busser busses busset bustee buster butere butter buttes bututs ebbers ebbert ebbest ebbets eberts eburru ebusus eebree effere effete effuse effutu efreet efter- efters erbree erebus erestu eresus eretes erfurt errest errett erster ersure eseebu essebt essert essess esssse essure estees esters estree estres estrus estter esttes esture ettutu eusebe eutere f-test febres feeres feeses ferber ferfer ferrer ferres ferret ferrur ferrus fertee ferter fesere fesser fesses fester festue festus fetter fettes feture feuter freers freese freest frefre freres fresse fresst frette fretts freure fruste fterer fterre fuerse fuerst fuerte furber furfur furrer furres furrfu fusees fusers fusser fusses fuster fustet fusure futret futter futtsu future r-tree re-use rebbes rebets rebuff rebute rebuts reefer reeffe reeser reeses reests refeet refeff refers refert refete reffus refret refter refurb refuse refute rerees resees resets rester restes restte resues reteer retees reteet retere retest retree retret retter rettur retube returf returu retuse reuere reuser reuses reuter reutte rreuse rubbee rubber rubeus rubutu rufete ruffer ruffes ruffet ruffus rufter rurutu rusetu russer russes russet russus rustre ruttee rutter rutube sebesu sebete sebree sebrus sebseb see-er seesee serefe serere serers serest sereus serre- serres serret seruse sesser sesses sessue sester sestet sestre sestus sesube setees seters setfee settee setter settsu settur seurre seurte sssfrs steber stebus steere steers stere- sterer steres sterre sterte steure street stress strete strube struer struse strust struts strutt stubbe stubbs stuber stubes stufer stuffe stuffs stufre sturre sturts stutte suberb subers subfeu subset suburb suebee suerte sueter suetes sufers suffer suffes suffet surbet surest surete surfer sursee surses surtur susses suster sustre susure susurr suttee sutter suture t-test t-tree t-tube tbtest teebee teebus teerts teests teetee teeter terbuf terese terete terets tereus terrer terres terret terser terset tersus terter tertre tesser tesses testee tester testes tetete tetter trebes trebur treete treets trefet trefte tresse tresus tretee tretes trette truest truett trufte trusse truste trusts tsetse ttests ttubes tubber tubers tuffet tufter turbet turfer turret turssu turtur tururu tusser tussur tutees tuteur tutter tuttut u-tube ubussu ufreet ureter urette uruffe uruses userer useter ussess usterr ustert usurer usures uterus uteute utters utuseb

b-trees bbbbbbb be-free bebeeru beefers beetree berbere berbers berebus berefet beretts berrett bertree bestbet besteer bestest bestrut bestuur betrese betrest betrust betters beuster brebeuf breeses bresser brettes brettus bruesse brusure brutter bubbers buffers buffest buffets buffett burbure burette burress burruss burster busfest bussers bustees busters bustuus butters effuser effuses effusus efreets ersters erustes es-tset esterre estrees estreet estrete eusebes februus ferebee ferrere ferrers ferrest ferrets ferrure festers festues fetters fetuses freebee freeest freeset freeter freetts fresses fretter frubber fruster furrure furuset fussers fustets futerer futters futures futureu re-fuse re-user re-uses rebetes rebuffs reburse rebuses reefers reefest referee referer referse refrete refrets refurbs refuser refuses refuter refutes rerefer resfest ressett resters restest restuff resurse reteere reterre retests retrete retruse retruss retrust rettert retubes returfs retusus reusers reuters reutter rubbers rubbest rubster rubuses ruffers ruffest russert russets russett rustres rutters seeress seesees seester sesters sestets sestett setfees setfree settees setters settest seubert seuerte seurete sssssss steerer sterres stetter steurer streber streete streets streett struses stubber stuffer stuffet stutter subbers subsere subsets subter- subtest subtree suburbs suffers suffete suffuse surebet surette surfers surfest surfuse sursese surtees susters sustres suttees sutters suttree sutturu