sert seru sesc sese sess sest set- setc sete sets sett seur sjcc sjcs sjrt sjsu sjur srbc srcc srct sreb srec sres srtr srub ssbr sscc ssce sscs ssec ssee sses sset ssrc ssrs sssb sssc ssss sstb sstc ssts stbc stbs stcc stcs stcu stec stee ster stes stet strc stre strs stru stss sttc sttr stub stuc stue stur stus stut sub- subb subj subs suc- succ sucr sucs suee suer sues suet sueu sur- surc sure surr surs surt suru sus- suse suss sust susu sute sutu suus tbbs tbcb tbcc tbce tbrb tbst tcbs tccc tccu tctc tcts tebu tecr tecs tect teec teej teer tees teet teju ter- terc tere terj terr ters teru tesc tese tess test tete tetr tets tett tetu teut tjsj trcc tre- trec tree tres tret treu trst trtc trte trtr trub truc true trus trut truu tsbc tscc tsec tses tset tsse tssr tsst tstc tsts ttbb tter ttss tttt tubb tube tubr tubs tubu tucc tuer tues tuet turb turc ture turr turs turt turu tusc tuss tust tute tuts tutt tutu ubbe uber ubet ucbc uces ucrc ucsb ucsc ucsj ucst ucsu ucut uers uess urbe urbs ure- ures uret urre urse urss ursu urte urts urur urus urut usbc usbe usbr usbs uscc usce uscs usee user uses uset usjc ussb ussc usse ussr usss usst ussu ustb ustc uste usts usus utec uter utes utsc uttu uuuu

-tree bbbee bbser bbsrc bbuss bcbst bcers be-er beber bebes becej becue becut beebe beebs beers beest beete beets beeut bejte berbe bercu berec beres beret berre berru berse berte berts berus besee beset besse beste bests besut betee beter betes betre betrs bett- bette betts betus beuer beure beust beute brebu brece breer brees breet brere brers brese bress brest brets brett breu- brrrr brsec bruce bruer brues bruet bruse bruss brust brute bsure btc-e btr-t btstu bubbe buber buces bucet bucje bucsu bucur bujru burbs burcu bures buret burrs burru burse burst burte burts burtt buruc burus burut buser buses busse bussu buste busts busur busut busuu butec buter butes butte butts butut c-bus c-tec cbers ccccc ccett cebec ceber cebes cebus ceere ceese cerbu cerc- cerce cercs cerec cerej cerer ceres ceret cerje cerre cerrs cerse cerss certe certs cerus cesce cescr cesse ceste cests cetes cette cetus crebe crece creer crees cresc crese cress crest crete cretu creu- creue crres cruce cruet crure cruse crust cruts csere cstcc ctree cttee cubbe cubeb cuber cubes cubub cuers curbs curce curer cures curet curre currs curse curst curts cusec cuser cusse custe cutcu cutee cuter cutes cutts ebber ebbet ebers ebert ebure ecrus ecser eeeee eject ejure erbbe erber erebs erecs erect erere erest erets erres errtu erses erste ersts erte erter ertes erubs eruct eruts esbus esces escrt esect esere esser esses essse essue estce estee ester estes estet estre estur estus esure etest etete etree etres etter ettes eturu eucre eujet eurre eurus euser j-bus jcsee jcube jebet jebus jects jeers jeetu jejur jerre jerte jesse jests jesus jetee jeter jetes jette jetut jeure jeuse jeuss jeust jtest ju-ju jubbe jubeb jubes jubet jubur jubus jueju jujus juste justs juter jutes jutsu juuru rebbe rebec reber rebet rebts rebus rebut recce recet rect- recte rects recue recur recus recut reece reecs reere reese reest rere- reree reres reret resee reses reset resse reste restr rests resue resus retee reter retes retje retsu rette retts reuer reuet reuse reuss reute rsust rtejr rubee ruber rubes rubus rucer ruere ruers ruete rurec rusce ruses russe ruste rusts rustu ruter rutte ruutu s-bus s-tec sccbc scere scert screc scree scrub scrue scrus scter sctrs scuet scure scurr scurt scuse scut- scute scuts scutt sebbe sebes sebet secre secte sects secur secus seebe seece seere seers seese seest seesu seete serbs serce serec serej serer seres seret serjt serre serse serss sert- serte serts serue serut sesce seser seses sesse seste sestu sesue setec setee seter setse sette setts settu setus setut seuer seure seuss seute srbce srbec sssrb sssss steer stees steet sterc stere sterr sters stert stesu stete stets steur strbe streb stree stret streu strrs strub struc strue strut stube stubs stuer sturb sture sturt stuse stuss stute stuue subbu suber subss subst sucr- sucre sucst suere suers suess suest suete suets sueur sujee sujet surer sures surju surre surte surtr suruj surur surus suser suses susje susse susus sutee suter sutes sutte suttu tbtbt tbutt teber tebet tectb teebs teers teese teest teets tejus terce teres teret tereu terje terre terrs terse tert- tesse teste tests teter tetes tetr- tetsu tette teuts tjebu tjust treer trees treet trere tres- trese tress trest trete trets trett treus treut trsce trubs trubu truce truer trues truse truss trust trute truus tsebe tsere tsets tsrcs tsuru tsuur ttest ttttt ttusb tubbs tuber tubes tucet tuctu turbe turbt turet turje turju turre turse turss turst tursu turtu turut tutee tutte tutus tuuru u-cee uber- ubers ujue urbes ursus urter urubu uruce urucu urutu us-sc usees users usest usses uster ustje ustur usure usutu uter- utter uttur utube uturu uuuuu

b-tree bbbbbb bbsers becure beebee beebes beerse beerst beeste beeter bejjur bejsce berbee berber berbes bereet berere beresc 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 bjerre brbcsc brebes breere breese breest breres bresje bresse breste brests bretcu brette bretts breuer breust brubru bruces bruree brusje brusse bruste brutes brutus bs-tbs bubber bubbes bububu bueres buetts bujsce burbet burbur burcer burets burjuc burree burrer burret burser burses burseu bursts bursuc bursut burutu busbee busser busses busset bustec bustee buster butere butter buttes butucu bututs c-cube ceecee ceesse cercus cerete cereus certej certes ceruce ceruse cesser cesses cesset cestes cestus cesure creese creest creete cresce creset cresse cresst creste crests cresus cretes creuse cruces cruets cruses