krce krcn krcu kreb krec kree krek kren kret kreu krkc krke krkk krkn krkr krku krnb krne krnk krnn krnt krnu krrb krrc krre krrk krrn krrr krrt krtc krtk krtn krtr kruc krue kruk krun krur ktbb ktbc ktbn ktbr ktbt ktbu ktcc ktce ktck ktcr ktec ktee ktek kten ktkb ktkc ktke ktkk ktkn ktkr ktkt ktku ktnc ktne ktnk ktnn ktnt ktrb ktrc ktre ktrk ktrn ktrr ktrt ktru kttc kttk kttn kttr kttt kttu ktub ktuc ktun kubb kubc kube kubr kubu kucb kucc kuce kucr kuek kuen kueu kuke kukk kukn kuku kunc kune kunk kunr kunt kunu kurb kure kurk kurr kurt kuru kute kutr kutt kutu kuub kuuk kuur kuuu nbbc nbcc nber ncbc nccc nccn nccr ncct nccu ncec ncee ncen ncer ncnc ncrc ncre nctc ncte nctr ncue ncuk nebb nebe nebn nebr nebu necc nece neck necr nect neeb neen neer neet neke neku nene nent nenu nerc nere nerk nerr nert neru net- netb nete nett neuc neue neuk neun neur neut neuu nknt nktr nnnn nntn nren nrrc ntbc ntcc nter nteu ntnu ntrc ntru nttr ntuc nubc nube nubk nuce nuck nucu nuee nuer nuke nuku nunc nune nunk nunn nunt nurc nure nurn nurr nurt nuru nute nutt nutu nuuk rbbb rbbr rcbc rccb rccc rcet rcnr rctc rebb rebe rebk rebu recc rece reck recr rect recu reeb reek reen reet reke rekt rene renk renn rent renu rere rert reru rete retr rett reue reuk reut reuu rnbr rnnt rnut rrrr rrun rtcc rtce rtee rtkn rubb rube rubu ruce ruck ruct ruen ruer ruet ruke rukk rukn ruku runc rune runk runn runt rurc rure ruru rute rutt rutu ruun tbcb tbcc tbce tbrb tccc tccu tcnn tctc tebu teck tecr tect teec teek teen teer teet teke tenb tenc tene tenk tenn tent tenu ter- terc tere terk tern terr teru tete tetr tett tetu teuk teut tnbc tncc tneb tnut trcc tre- trec tree trek tren tret treu trtc trte trtr trub truc true truk trun trut truu ttbb ttcn tten tter tttt tubb tube tubr tubu tucc tuck tuen tuer tuet tuke tunb tunc tune tunk tunn tunu turb turc ture turk turn turr turt turu tute tutt tutu ubbe ubek uber ubet ucbc ucrc ucut ukcc ukek ukeu uknc ukrc ukur unbe uncc unce unct uneb unec unee unen uner unke unkn unne untb unte unut urbe ure- uret urke urne urre urte uruk urun urur urut utec uter utne uttu uuen uuuu

-tree b-r-k bbbee be-er bebek beber becke becue becut beebe beeke beene beete beeut beken beker bekke bence bene- benet benke benne bennu benue benuk benun benur benut berbe berck bercu berec berek beren beret berk- berke berne bernt berre berru berte berun betee beten beter betke betne betre bett- bette beuer beure beute brebu brece breck breek breen breer breet breke brene brenk brenn brent brere brett breu- brrrr bruce bruck bruen bruer bruet bruke brune brunk brunn brunt brute bruun btc-e btr-t bubbe buben buber bucek bucet bucku bucur buker buket bukk- buknu bunce bunke bunne bunte bunuk bunun bunut burck burcu burek buren buret burke burn- burne burnt burru burte burtt buruc buruk burun burut butec buten buter butke butte butut c-tec ccccc ccett ccnet cebec ceber cecun ceene ceere cence ceneu cent- centr cerbu cerc- cerce cerec ceren cerer ceret cerke cerne cerre certe ceten cette cetun cneru cnnnn cntrc crebe crece creek creen creer creke cren- crete cretu creu- creue crnce crnec crner cruce cruck cruet cruke crune crunk crunt crure cten- ctene ctree cttee cubbe cubeb cuber cubub cucuk cuker cunne cunt- cunut curce curer curet curre cutcu cutee cuter e-ten ebber ebbet ebene ebern ebert ebner ebure eccen ecker eecke eeeee eence eener eenet eeten ekene ekker ekren ekuku ekuru enbun encke encre encur enent enete enker enku ennet enrut enten enter entre enure enurn erbbe erben erber erect ereen erere erkec ernen ernet errtu erte erter ertun eruct eruke eteke etern etete etnre etree etrek etrun etten etter eturu eucen eucre eunet eurre k-t-b k-ute kebbe kebek keben keber kecer keene keere kekec kenet kenku kenne kente kerek keren keret kerne kernu kerre kertu ketek keten keter kette kneck kneen knete knuck knurr knute kreek kreke krenn krete kreuk krnce krunk kruun kubek kuben kuber kucer kucuk kukec kukur kunek kunen kuner kunku kunne kunur kurbu kurek kuren kurku kurne kurre kurte kuruc kuruk kutte kuttu kutur ncree ncube nebek neber nebet nebtu necke necr- nect- neece neere neetu neker nente neree neret nerre nerte nerur neten netne nette neuck neuen neuer neueu neune neur- neure nkubu nnebe ntete nu-nu nucet nuker nunce nunet nunun nurce nure- nurek nuruk nurun nutec nutte nutuk rebbe rebec reber rebet rebun rebut recce recen recet recke reckn rect- recte recue recur recut reece reene reere reken rekke rekne rekun rence renee rener renet renke renku renne rente rere- reree reret rerun retee reter retnr rette reuen reuer reuet reune reute rt-rk rtenn rubee ruben ruber rubke rucer ruere ruete rueun ruken rukke runcu runec runer runet runne runte rurec ruten ruter rutte ruutu t-nut tbtbt tbutt tcutk teber tebet tebuk tecn- tecnu tectb teken teket tekke tekn- ten-k tenbc tencc tence tenen tener tenet teneu tenke tenne tennu tente tenue tenur terce terek teret tereu terne terre tert- teten teter tetr- tette tneck tntnt trbuk treck treen treer treet trenc trene trent trere trete trett treut trubu truce truck truer truke trunk trute ttnet ttttt tubek tuber tucet tucke tuctu tuene tukne tukur tune- tuner tunku tunne turbe turbt turck turek turen turet turku turn- turne turnt turnu turre turtu turut tutee tutku tutte tutun tuuru u-cee ubeen uber- uceku ueken ukeke ukert unbet uncut unete unken unker unket unkur unnet unnun unnur unnut unrun unten unter unurn urent urker urkun urkut urter urubu uruce urucu urutu utenn uter- utter uttur utube uturn uturu uunet uuuuu

b-tree bbbbbb becken becker