brets brett breu- brrrr bruer brues bruet bruse bruss brust brute bsure btr-t btstu bubbe buber burbs bures buret burps burrs burru burse burst burte burts burtt burus burut buser buses busse bussu buste busts busur busut busuu buter butes butte butts butut ebber ebbet ebers ebert ebure eeeee eepee epees epeus eppes epptb epubs epure erbbe erber erebs erept erere erest erets erres errtu erses erste ersts erte erter ertes erubs erupt eruts esbus esere esp-r esper espre esser esses essse essue estee estep ester estes estet estre estur estus esure etest etete etree etres etter ettes eturu eurre eurus euser p-rep pbers pebre peebu peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- pepup perer peres peret perps perre perse persp perst perte perur perus peses pesse peste pests pesut petbe peter petes petr- petre petru pette petts petur petus peure peurs ppers prees preps prese press prest prete preus pruss prute pssst pssts pter- ptere pters ptprb ptpre ptprr ptprs ptprt ptpru puber pubes puets puett pupet puppe puree purer pures purre purrs purse purte purus puter putre putt- putte putts puttu putup puurs re-up rebbe reber rebet rebts rebus rebut reepe reere reese reest repet reppe repps reprt repts repub repus reput rere- reree reres reret resee reses reset resse reste restr rests resue resup resus retee reter retes retsu rette retts reuer reuet reups reuse reuss reute rrsps rsust rubee ruber rubes rubup rubus ruere ruers ruete rupee ruper rupes rupse ruses ruspe russe ruste rusts rustu ruter rutte ruutu s-bus sebbe sebes sebet seebe seeps seere seers seese seest seesu seete seeup sepet sept- septs septu serbs serer seres seret serpe serps serre serse serss sert- serte serts serue serup serut seser seses sesse seste sestu sesue setee seter setse sette setts settu setup setus setut seuer seure seuss seute speer spees speet spere sperr spert spete spets speus spree spres spret sprue sprut spues spure spurr spurs spurt spuse spute sputs srprb sssrb sssss steep steer stees steet step- stepb stepe stepp steps stept stere sterr sters stert stesu stete stets steur strbe strbp streb stree strep stret streu strrs strub strue strut sttep stube stubs stuer stupe stupp stups sturb sture sturt stuse stuss stute stuue subbu suber subss subst suere suers suess suest suete suets sueur super supes supet suppe supps supre supts supur suput surer sures surpu surre surte surtr surur surus suser suses susse susus sutee suter sutes sutte suttu tbsps tbtbt tbutt teber tebet teebs teepe teers teese teest teets teeup tepee tepes tepet tepeu teppu teres teret tereu terps terre terrs terse tert- tespe tesse teste tests teter tetes tetr- tetsu tette teuts tppts treer trees treet trepp trept trere tres- trese tress trest trete trets trett treus treut trubs trubu truer trues trups trupt truse truss trust trute truus tsebe tsere tsets tsuru tsuur ttest ttttt ttusb tubbs tuber tubes tupee turbe turbt turet turps turre turse turss turst tursu turtu turup turut tutee tutte tutus tuuru uber- ubers upeet upper upput upse- upset upter urbes ursus urter urubu urupe urutu usees users usest useup usses uster ustup ustur usure usurp usutu uter- utter uttur utube uturu uuuuu

b-tree bbbbbb bbsers beebee beebes beeper beerse beerst beeste beeter bepeps berbee berber berbes bereet berere berest berets berrer berres berret bersee berset bertes bertre bertus berube berust besbes besbre besert besets bespue besser besses besset bessus bestep bester besure betere betete betrue bettee better bettes betutu beurre beuste brebes breere breese breest breres bresse breste brests brette bretts breuer breust brubru bruree brusse bruste brutes brutus bs-tbs bubber bubbes bububu bueres buetts bupers burbet burbur burets burpee burper burree burrer burret burrup burser burses burseu bursts bursut burutu busbee busser busses busset bustee buster bustup butere butter buttes bututs ebbers ebbert ebbest ebbets eberts eburru ebusus eebree epesse epures epurse erbree erebus erestu eresus eretes errest errett erster ersure erupts eseebu espere espers essebt essert essess esssse essure estees esters estree estres estrus estter esttes esture ettutu etupes eusebe eutere pberet pebees pebete peepee peeper peerer peerse peeter peetre pepper pepsup perere peress peretu perper perpet perree perret persee perses perseu persse persue perter pertre peruse pespes pesser pester pestre peteet peters peteru petree petrer petrus petter pettet pettus pppppp ppsspp preers preest preeue prepub presee preses preset press- presse preste prests preter pretre prette preue- preuss pruett pstree pubber pubsub puerer puppet pupput purees purest purete purpre purpur purree purrer purres purser purses purset pursue purtse pusser pusses pustet put-up putbus puters putput putrer putsep putsup puttee putter puttur putups puture r-tree re-use rebbes rebets rebute rebuts reeper reeser reeses reests repete repets repper repure repuru repute rerees resees resets respet respue rester restes restte restup resues reteer retees reteet retere retest retree retret retter rettur retube returu retuse reuere reuser reuses reuter reutte rreuse rub-up rubbee rubber rubeus rubsup rubutu rupees rupert ruppes rurutu rusetu rusper russer russes russet russus rustre ruttee rutter rutube sebesu sebete sebree sebrus sebseb see-er seesee seesup seetep sepses septer septet septre septur serere serers serest sereus serpet serpur serre- serres serret seruse sesser sesses sessue sester sestet sestre sestus sesube set-up setees seters setsup settee setter settsu settur setups seurre seurte speere speers sperre sperse sperte spette sprees spreet spreeu sprete sprett spruer sprues spruse sprutt spurre spurts srprss ssteps steber stebus steeps steere steers stepes steppe stepps stepup stere- sterep sterer steres sterre sterte sterup steups steure stpete streep street strepe streps strept stress strete strube struer strupt struse strust struts strutt stubbe stubbs stuber stubes stupes stupre sturre sturts stutte suberb subers subset suburb suebee suerte sueter suetes super- superb supers supper surbet sure-p surest surete sursee surses surtur susper susses suster sustre susupe susure susurr suttee sutter suture t-test t-tree t-tube tbtest teebee teebus teepee teerpu teerts teests teesup teetee teeter tepees tepper terese terete terets tereus terper terrer terres terret terser terset tersus terter tertre tesser tesses testee tester testes tetete