kuuu nber nebb nebe nebn nebr nebu neeb neen neer neet nege neke neku nene neng nent nenu nere nerk nerr nert neru net- netb nete nett neue neuk neun neur neut neuu ngen nger ngtn ngur nguu nkgb nknt nktr nngn nnnn nntn nren nter nteu ntnu ntru nttr nube nubk nuee nuer nuke nuku nune nung nunk nunn nunt nure nurn nurr nurt nuru nute nutt nutu nuuk rbbb rbbr rebb rebe rebk rebu reeb reek reen reet rege regn regr regt regu reke rekt rene reng renk renn rent renu rere rerg rert reru rete retr rett reue reuk reut reuu rgbe rgtr rnbr rnnt rnut rrrr rrun rtee rtkg rtkn rubb rube rubu ruen ruer ruet ruge rugg ruke rukk rukn ruku rune rung runk runn runt rure ruru rute rutt rutu ruun tbrb tebu teek teen teer teet tegg tegt tegu teke tenb tene teng tenk tenn tent tenu ter- tere terk tern terr teru tete tetr tett tetu teuk teut tkkg tneb tnge tnut tre- tree treg trek tren tret treu trge trng trte trtr trub true trug truk trun trut truu ttbb tten tter ttkg tttt tubb tube tubr tubu tuen tuer tuet tugg tugu tuke tunb tune tung tunk tunn tunu turb ture turg turk turn turr turt turu tute tutt tutu ubbe ubek uber ubet uggt ugne ugur uguu ukek ukeu ukur unbe uneb unee unen uner ungu unke unkn unne untb unte unut urbe ure- uret urge urgu urke urne urre urte uruk urun urur urut uter utne uttu utug uuen uuuu

-tree b-r-k bbbee bbgun be-er bebek beber beebe beeke beene beete beeut begee beget begge begue begun begur begut beken beker bekke bene- benet benge bengu benke benne bennu benue benuk benun benur benut berbe bereg berek beren beret berge berk- berke berne bernt berre berru berte berun betee beten beter betke betne betre bett- bette beuer beure beute brebu breek breen breer breet breg- brege bregg breke brene breng brenk brenn brent brere brett breu- brrrr bruen bruer bruet bruge brugg bruke brune brung brunk brunn brunt brute bruun btr-t bubbe buben buber bugen buger bugge bugre bugun buker buket bukk- buknu bunge bungu bunke bunne bunte bunuk bunun bunut burek buren buret burge burgk burgu burke burn- burne burnt burru burte burtt buruk burun burut buten buter butke butte butut e-ten ebber ebbet ebene eberg ebern ebert ebner ebure eeeee eener eenet eeten egene eggen egger eggng egner egrek egret ekene ekker ekren ekuku ekuru enbun enent enete engen enger enker enku ennet enrge enrut enten enter entre enugu enure enurn erbbe erben erber ereen erege erere ergen ergun ernen ernet errtu erte erter ertug ertun eruke eteke etern etete etnre etree etrek etrun etten etter etung eturu eugen eunet eurre gbeke gberg gberu geben geber gebet gebke gebre gebur geere geert geete gegge genbu gener genet genge genre gente gentu gerbe geren gerke gerre gertt getee geten geter gette getuk grebe greek green greer greet grege gregg grene greng grenn grent grete grett greut grgen grgur grrrr grubb grube grune grunk grunt grure gruut gtk-- gtube gubbe guben guber gubru guene guere guern gugen guner gunge gungu gunne gunnr gunte guren gurge gurke gurne gurre gurun gurur guten gutte k-gee k-gun k-t-b k-ute kebbe kebek keben keber keene keere kegen keget kenet kenge kenku kenne kente kerek keren keret kergu kerne kernu kerre kertu ketek keten keter kette kneen knete knurr knute kreek kreke kreng krenn krete kreuk kruge krunk kruun kubek kuben kuber kugur kukur kunek kunen kuner kungu kunku kunne kunur kurbu kurek kuren kurku kurne kurre kurte kuruk kutte kuttu kutur nebek neber nebet nebtu neere neetu negeb neger negre negru negun negur neker nente neree neret nerre nerte nerur neten netne nette neuen neuer neueu neune neur- neure ngege ngeue ngugu ngure nguru nkubu nnebe ntete nu-nu nuget nuker nunet nunge nunun nure- nurek nuruk nurun nutte nutuk rebbe rebeg reber rebet rebun rebut reege reene reere regen reger reget regge regne regtt regur regut reken rekke rekne rekun renee reneg rener renet renge rengg renke renku renne rente rere- reree reret rerun retee reter retnr retrg rette reuen reuer reuet reune reute rngtt rt-rk rtenn rtgun rubee ruben ruber rubke ruegg ruere ruete rueun rugen ruger ruget rugge ruken rukke runer runet runge rungu runne runte ruten ruter rutte ruutu t-nut tbtbt tbutt teber tebet tebuk teege tegen tegre tegur teken teket tekke tekn- ten-k tenen tener tenet teneu tenge tengu tenke tenne tennu tente tenue tenur terek teret tereu terge tergu terne terre tert- teten teter tetr- tette teuge teugn tntnt trbuk treen treer treet treg- trene trent trere trete trett treut trubu truer trugg truke trung trunk trute ttnet ttttt tubek tuber tuene tugen tugun tukne tukur tune- tuner tunge tunku tunne tunng turbe turbt turek turen turet turku turn- turne turnt turnu turre turtu turut tutee tutku tutte tutun tuuru ubeen uber- ueken ugene ugrug ukeke ukert ukuug unbet unete unger unget ungur unken unker unket unkur unnet unnun unnur unnut unrug unrun unten unter unurn urent urger urgun urgut urker urkun urkut urter urubu urutu utenn uter- utter uttur utube uturn uturu uunet uuuuu

b-tree bbbbbb bebung beebee beebug beegee beeker beenge beerne beeter beggen begger begnet begunk bekenu bekker benben benete benett bengbu benger bengre benken benner bennet bennur benreu bentee benter berbee berber bereet berege bereke berene berere bergen berger bergne berken berker berkut berner bernet berrer berret bertre berube betere betete betrue bettee betten better betune betung beturn betutu beuren beurre breege breere breger bregge brekke brener brenne brette breuer brgnng brubru bruern brugge bruker bruket bruner brunet brunke brunne bruree bubber bububu buerne bugbug bugger bugget buk-gu bukett bukkur bukuru bunbeg bungee bunger bunker bunnet bunter burbet burbur bureng burgee burgen burger burket burkut burn-e burner burnet burnuk burnut burree burren burrer burret buruku burutu butene butere butner butnet butten butter ebbert eburru eebree egbere egbert egerne eggern eggert eguren ekberg ekeren