ruet rule rull rune runn runt rupe rupp rupt rure rurp ruru rute rutl rutt rutu ruun tbrb tbtp tebu teel teen teer teet tel- tele tell teln telt telu tenb tene tenn tenp tent tenu tepe tepp tepu ter- tere tern terp terr teru tete tetr tett tetu teut tlen tneb tnut tper tppp tppr tpte tptp tptr tput tre- tree tren tret treu trpe trpn trpp trte trtr trub true trun trut truu ttbb tten tter tttt ttul tubb tube tubr tubu tuel tuen tuer tuet tule tull tulp tulu tunb tune tunn tunu tupe tupu turb ture turn turp turr turt turu tute tutl tutt tutu u-rp ubbe uber ubet uble uele uell uleb ulee ulen ulle ullr ulne ultt ulul unbe uneb unee unen uner unle unlp unne untb unte unut upbe upen uplb upne upnp uppe uppp uppu uptl upup urbe ure- uret urle urne urre urte urun urup urur urut utel utep uter utne uttu uuen uulu uuuu

-tree bbbee be-er bebel beber beebe beele beene beete beeut belee belen belep belet bellb belle belue belur belut bene- benet benne bennu benue benun benur benut bepen beppe beppu berbe berel beren beret berle berne bernt berre berru berte berun betee betel beten beter betle betne betre bett- bette betul beuer beule beure beute bleen bleep bleer bleet blent blere blerp blete bleue bluer bluet blunt blurb blure blurr blurt bpeen brebu breel breen breer breet brell brene brenn brent brere brett breu- brrrr bruen bruer bruet brule brull brune brunn brunt brute bruun btr-t bubbe buben buber buble buell bulb- bulen bull- bulle bulul bulun bulut bunne bunte bunun bunut burel buren buret burle burn- burne burnt burru burte burtt burun burut buten buter butle butte butut e-ten ebber ebbet ebble ebell ebene eberl ebern ebert eblul ebner ebull ebure eeeee eeler eener eenet eepee eeten elben eleet elele elene eleut ellel ellen eller ellet ellul elpee elper elren elten elulu eluru elute enbun enent enete enlen ennet enper enpeu enrut entel enten enter entre enure enurn epeen epene epptb epure erbbe erben erber ereen erept erere erlen ernen ernet ernle erpel errtu erte ertel erter ertun erupt etern etete etnre etree etrun ettel etten etter ettle eturu euell eulen euler eunet eupen eurel eurre lebel leben leber lebet leell leere leert lelep leleu lelle lenne lente lepel leper lepet leppe lepre lept- leren lerer lerne letbe leten letre lette letup letur leupp lubbe luber luble lubne lubun lubur lueen luen lulle lulte lulul lunel lunet lunne luper luppe lupul luren lurer lurne lurue lurun lurup lute- luter lutte n-p-n nbtel nebel neber nebet neble neblu nebpu nebtu neele neelu neere neetu nelle nellu nente neper neple neppe nepte neree neret nerre nerte nerul nerur neten netle netne nette neuen neuer neueu neune neur- neure neurl nlnet nnebe ntete ntlet nu-nu nubel nuble nubpl nuell nulle nunet nunun nupen nuprl nupur nure- nurlu nurun nutte p-n-p p-rep pebre peebu peele peell peene peent peere peerl peert peete pelee peler pelet pelle pene- pener penne penre pent- pente pentu penup penur pepee pepel peple peppe pept- pepup perel peren perer peret perle perne pernt perre perte perun perur petbe peter petr- petre petru pette petun petur peule peure plebe pleen pleep pleet plene plete pleut pllnt plupp plurn plut- plute pptnt preen prell prelp prene prent prepl prepn prete prntr pruen prun- prune prunt prute pter- ptere ptprb ptpre ptprn ptprr ptprt ptpru puber puble puett puler pull- pulle pullu pulut punbb punee punel punne punte pupet puple puppe puree purel puren purer purle purre purte purul puten puter putre putt- putte puttu putun putup re-up rebbe rebel reber rebet rebun rebut reene reepe reere relee relet relte relue renbp renee rener renet renne rente repel repen repet reple reppe reprt repub repun reput rere- reree reret rerun retee retel reter retnr rette reuel reuen reuer reuet reule reune reute rnpep rtenn rubee rubel ruben ruber ruble rubup ruele ruell ruere ruete rueun ruler runer runet runne runte runup rupee rupel ruper ruten ruter rutle rutte rutul ruule ruutu t-nut tbtbt tbutt teber tebet teele teell teepe teeup tele- telen telep teler teleu tell- telle tenel tenen tener tenet teneu tenlb tenne tennu tenpn tente tenue tenup tenur tepee tepet tepeu teppu tepun teret tereu terne terre tert- tetel teten teter tetle tetr- tette tlell tlett tllbr tllnn tntnt tpler treen treer treet trele trene trent trepp trept trere trete trett treut trubu truel truer trule trull trupt trute ttnet ttttt tuber tubul tuell tuelt tuene tulet tulle tulun tune- tunel tuner tunne tupee tuple turbe turbt turel turen turet turle turn- turne turnp turnt turnu turre turtu turul turup turut tutee tutel tutle tutte tutun tuuru ubble ubeen uber- uelen ulene ulent ullet ullur ulpur ulten ultre ululu uluru unbet unerp unete unlet unnet unnun unnur unnut unpen unpeu unput unrep unrun unten unter unurn upeet upenn uppen upper upput uprun upter urelu urent urtel urter urtlu urubu urupe urutu utenn uter- utter uttur utube uturn uturu uunet uuuuu

b-reel b-tree bbbbbb beblur beebee beelen beeler beeper beerne beeter beetle belber belene belett bellen beller bellet belleu bellue belnet belper belpre beltel belter beltre beltup belull belute benben benete benett benner bennet bennur benreu bentee benter benupe bepelt berbee berber bereel bereet berene berere berner bernet berrer berret bertel bertre berube betell betelu betere betete betrue bettee bettel betten better bettle betune beturn betutu beuren beurre bleere blenn- blenne blente blublu bluett blurre bluter brebel breere brener brenne brette breuer brubru bruel bruern brulee brunel bruner brunet brunne bruree brutel bubber bubble bubele bububu bueler buellt buepen buerne bulbel bulbul bulent bull-e bullee bullen buller bullet bulnet bultel bulter bunnet bunter burbet burble burbur burell burler burlet burn-e burner burnet burnup burnut burpee burper burple burree burrel burren burrer burret burrup burtle burutu butene butere butler butner butnet buttel butten butter buttle ebbert eberle eburru eebree eeuler elbert elburn eleele ellern ellett eluent enbene