nber nebb nebe nebn nebr nebu neeb neen neer neet nehe nehu neke neku nene nenh nent nenu nere nerk nerr nert neru net- netb nete neth nett neue neuk neun neur neut neuu nheb nhnn nknt nktr nnnn nntn nren nter nteu nthn ntht ntnu ntru nttr nube nubk nuee nuer nuke nuku nune nunk nunn nunt nure nurn nurr nurt nuru nute nuth nutt nutu nuuk rbbb rbbr rebb rebe rebk rebu reeb reek reen reet rehb rehe rehn reht reke rekt rene renk renn rent renu rere rert reru rete reth retr rett reue reuk reut reuu rheb rhee rhen rhet rhue rhun rnbr rnnt rnut rrrr rrun rtee rthk rtkn rubb rube rubu ruen ruer ruet ruhe ruhh ruhn ruhr ruke rukh rukk rukn ruku rune runk runn runt rure ruru rute ruth rutt rutu ruun tbrb tebu teek teen teer teet tehr teke tekh tenb tene tenk tenn tent tenu ter- tere terk tern terr teru tete teth tetr tett tetu teuk teut the- theb thee thek then ther thet theu thnk thnt thre thru thtb thtr thue thuk thun thur tneb tnut tre- tree trek tren tret treu trte trtr trub true truk trun trut truu ttbb tten tter tttt tubb tube tubr tubu tuen tuer tuet tuht tuhu tuke tunb tune tunk tunn tunu turb ture turk turn turr turt turu tute tutt tutu ubbe ubek uber ubet uher uhuh ukek ukeu ukur unbe uneb unee unen uner unke unkn unne untb unte unth unut urbe ure- ureh uret urke urne urre urrh urte urth uruk urun urur urut uter uthe utne uttu uuen uuuu

-tree b-r-k bbbee be-er bebek beber beebe beeke beene beete beeth beeut behen beher behet behue beken beker bekke bene- benet benke benne bennu benue benuk benun benur benut berbe bereh berek beren beret berhe berk- berke berne bernt berre berru berte berth berun betee beten beter bethe betke betne betre bett- bette beuer beure beute beuth bheen bheer brebu breek breen breer breet breke brene brenk brenn brent brere breth brett breu- brrrr bruen bruer bruet bruhn bruke brune brunk brunn brunt brute bruun btr-t bubbe buben buber buhen buhne buker buket bukk- buknu buneh bunke bunne bunte bunuk bunun bunut bureh burek buren buret burke burn- burne burnt burru burte burtt buruk burun burut buten buter buthe butke butte butut e-ten ebber ebbet ebene ebern ebert ebneh ebner ebure eeeee eener eenet eeten eheke ehnen ehren ehret ekene ekker ekren ekuku ekuru en-hk enbun enent enete enhet enker enku ennet enrut enten enter enthe entre enure enurn erbbe erben erber ereen erere ernen ernet errtu erte erter erthe ertun eruke eteke etern etete ethen ether ethn- etnre etree etrek etrun etten etter eturu eunet eurre h-e-b h-net hburn he-he hebbe hebe- heben heber heene heere heern heete hehte heker hekk- hekne hekte henek henen henke henne hennu hente herek heren herke herne herre herte herth hertu heruk herur herut hetek heter hethe hette hetur heuer heure heurt heute hheth hhhhh hrbek hrere hthrt htree hubbe huber hubur huere huete huhuh huker hunne hunte hunth hunut hurbe hureh hurre hurtt hurtu hutte huttu huuru k-t-b k-ute kebbe kebek keben keber keene keere kehek kehte kenet kenku kenne kente kerek keren keret kerne kernu kerre kertu ketek keten keter kethe kette kheer khene kheth khuen khuru khutu khuur kneeh kneen knete knurr knute knuth kreek kreke krenn krete kreuk krunk kruth kruun kubek kuben kuber kueht kuheh kuhnt kukur kuneh kunek kunen kuner kunku kunne kunur kurbu kureh kurek kuren kurku kurne kurre kurte kurth kuruk kuteh kuthe kutkh kutte kuttu kutur nebek neber nebet nebtu neere neetu neheb neher nehru neker neneh nente neree neret nerre nerte nerur neten nethe netne nette neuen neuer neueu neune neur- neure neuth nkubu nnebe ntete nu-nu nuhuh nukeh nuker nunet nunun nure- nureh nurek nurth nuruk nurun nuteh nuthe nutte nutuk rebbe reber rebet rebun rebut reene reere reerh reeth reher rehet rehue reken rekke rekne rekun renee rener renet renke renku renne rente rere- reree reret rerun retee reter rethe retnr rette reuen reuer reuet reune reute reuth rheen rhene rhett rhnet rt-rk rtenn rubee ruben ruber rubke ruere ruete rueth rueun ruhen ruhnu ruhub ruken rukke runer runet runne runte ruteh ruten ruter ruthe ruthu rutte ruuth ruutu t-hub t-nut tbtbt tbutt teber tebet tebuk teeth tehee teken teket tekke tekn- ten-k tenen tener tenet teneu tenke tenne tennu tente tenth tenue tenur terek teret tereu terne terre tert- teten teter tethe tetr- tette teuhe thebe theeb theek theer theeu theke thene thenk ther- there therk thern thete theth theue theuk theun thre- three thret threu thrub thrue thuet thunb thune thunk thure thurn thurt thuru thute tntnt trbuk treen treer treet trene trent trere trete trett treut trubu truer truke trunk trute truth ttnet ttttt tubek tuber tuene tuhte tukne tukur tune- tuner tunku tunne turbe turbt tureh turek turen turet turku turn- turne turnt turnu turre turtu turut tutee tutku tutte tutun tuuru ubeen uber- ueken uh-ee uh-uh uhhuh uhuru ukeke ukert unbet unete uneth unhue unken unker unket unkur unnet unnun unnur unnut unruh unrun unten unter unurn urent urker urkun urkut urter urthe urubu urutu utenn uter- uther utkhu utter uttur utube uturn uturu uunet uuuuu

b-tree bbbbbb beebee beeker beerne beeter behenu behete behnke behter bekenu bekker benben benete benett benhur benken benner bennet bennur benreu bentee benter berbee berber bereet bereke berene berere berhet berken berker berkut berner bernet berrer berret berthe bertre berube betere betete bethen bethke betrue bettee betten better betune beturn betutu beuren beurre breere breeth brekke brener brenne brethe brette breuer brubru bruern bruker bruket bruner brunet brunke brunne bruree bthree bubber bububu buerne buhren buhrer bukett bukkur bukuru bunker bunnet bunter burbet burbur burket burkut burn-e burner burnet burnuk burnut burree burren burrer burret buruku burutu butene butere butner butnet butten butter butthe ebbert ebbeth eburru eebree eethen ekeren ektene enbene enhere enkuru enteer entent enter- entere