ketu keur kkbb kkbd kkbe kkbr kkbt kkcb kkcd kkck kkcr kkct kkdc kkdd kkdt kked kkkk kkrb kkrc kkre kkrk kkrr kkrt kktc kktk kktu kkut kkuu krbb krbd krbe krbk krbr krbt krcb krcc krcd krce krcu krdc krdd krde krdr krdu kreb krec kred kree krek kret kreu krkc krkd krke krkk krkr krku krrb krrc krre krrk krrr krrt krtc krtk krtr kruc krue kruk krur ktbb ktbc ktbr ktbt ktbu ktcc ktce ktck ktcr ktdb ktdc ktdd ktde ktdk ktdr ktec kted ktee ktek ktkb ktkc ktke ktkk ktkr ktkt ktku ktrb ktrc ktre ktrk ktrr ktrt ktru kttc kttk kttr kttt kttu ktub ktuc kubb kubc kubd kube kubr kubu kucb kucc kucd kuce kucr kudd kude kudu kued kuek kueu kuke kukk kuku kurb kurd kure kurk kurr kurt kuru kute kutr kutt kutu kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rcdc rcde rcet rcrd rctc rder rebb rebe rebk rebu recc recd rece reck recr rect recu redc redd rede redr redu reeb reed reek reet reke rekt rerd rere rert reru retd rete retr rett reue reuk reut reuu rred rrrr rtcc rtce rtdt rtee rubb rube rubu ruce ruck ruct rudd rude rued ruer ruet ruke rukk ruku rurc rurd rure ruru rute rutt rutu ruud tbcb tbcc tbcd tbce tbrb tccc tccu tcdd tctc tddb tdkr tebu teck tecr tect tedd tede tedk teec teed teek teer teet teke ter- terc tere terk terr teru tete tetr tett tetu teuk teut trcc tre- trec tred tree trek tret treu trtc trte trtr trub truc trud true truk trut truu ttbb tter tttt tubb tube tubr tubu tucc tuck tude tudu tuer tuet tuke turb turc turd ture turk turr turt turu tute tutt tutu ubbe ubek uber ubet ubud ucbc ucdc ucdd ucrc ucut udbc uder udet uduk ukcc ukek ukeu ukrc ukur urbe urde urdu ure- ured uret urke urre urte uruk urur urut utec uter uttu uuuu

-tree b-e-d b-r-k bbbee bcced bckdk bd-re be-er bebed bebek beber becke becue becut bedde bedee beder bedet bedub bedue beduk beebe beede beeke beerd beete beeut beker bekke berbe berck bercu berde berdu berec bered berek beret berk- berke berre berru berte betee beter betke betre bett- bette beuer beure beute brebu brece breck bredd brede bredt breed breek breer breet breke brerd brere brett breu- brrrr bruce bruck brud- brude brued bruer bruet bruke brute btc-e btr-d btr-t bubbe buber bucek bucet bucku bucur budde buddu budec budur buker buket bukk- burck burcu burde burek buret burke burru burte burtt buruc burud buruk burut butec buter butke butte butut c-tec ccccc ccett cduce cebec ceber ceded ceder cedr- cedre ceede ceere cerbu cerc- cerce cerec cered cerer ceret cerke cerre certe cette crebe crece crede creed creek creer creke crete cretu creu- creue crked cruce cruck crude cruet cruke crure ctree cttee cubbe cubeb cubed cuber cubub cucuk cudde cuker curce cured curer curet curre cutcu cutee cuter d-cru dc-uk ddddd ddruk debce debed deber debet debke debrc debte debut decet deckc decke decur dedde dedee deder dedur dedut deece deede deere deked derbe derce derde dered derek derke derre derub derue deruk detek deter detre dette detur deuce deure deut- drdre dreck dredd drede dreed drere druce drude du-ku dubec dubee dubek dubuc ducke duded dudek duder duduc duduk duere duerr duete duett duked dukeu dukku durbe dured duree durer duret durre durte durtu dutte e-dee ebbed ebber ebbet ebert ebure ecker edder eddre edere edred edu-k educe educt eecke eeeee eerde ekker ekuku ekuru erbbe erber erdec erdek erdre erdut erect erede erere erkec erred errtu erte erter eruct eruke eteke etete etree etrek etter etude eturu eucre eurre k-b-d k-dee k-t-b k-ute kebbe kebek keber kecer kedde keder kedre keere kekec keked kerek keret kerre kertu ketek keter kette kreek kreke krete kreuk kubed kubek kuber kucer kucuk kudde kudur kukec kukur kurbu kurek kurku kurre kurte kuruc kurud kuruk kutte kuttu kutur rebbe rebec reber rebet rebud rebut recce reced recet recke rect- recte recue recur recut redbd redde reder redub redur reece reede reere rekke rerde rere- reree reret reted retee reter rette reuer reuet reute rt-rk rubee ruber rubke rucer ruder rudkk ruede ruere ruete rukke rurde rurec ruter rutte ruutu tbtbt tbutt tcutk teber tebet tebuk tectb teder teerd teket tekke terce terek teret tereu terre tert- teter tetr- tette trbuk treck treed treer treet trere trete trett treut trubu truce truck trude trued truer truke trute ttttt tubed tubek tuber tucet tucke tuctu tuder tudre tudur tukur turbe turbt turck turek turet turku turre turtu turut tutee tutku tutte tuuru u-cee u-dub uber- uceku udder udert ukcdr ukeke ukert urdee urduk urker urkut urter urubu uruce urucu urutu uter- utrdb utter uttur utube uturu uuuuu

b-tree bbbbbb becked becker becket becure bedded bedder bedebt bedeck bederk beduck beduke beduru beebee beedee beeker beerde beeter bekker berbee berber bercke berede bereet bereke berere berker berkut berrer berret bertre berube betere betete betrue betted bettee better betutu beurre bredde breded breder breede breere brekke bretcu brette breuer brubru bruder brudet bruker bruket brurde bruree bruted bubber bububu bucked bucker bucket budded budder budruk bukett bukkur bukuru burbet burbur burcer burder burdet burdur burked burket burkut burred burree burrer burret buruku burutu butere butted butter butucu c-cube ceecee cerete ceruce creede creeke creete creket crudde cruded cruder crured cubbed cubber cubeck cubert cubube cucube cucurb cuddee curbed curber curded curete curred currer curret curted curter cutcut cutted cuttee cutter dbette de-err debdeb debece debere debert debete debret debted debtee deburr decede deceue decked decker decred decree decure decurt decute deduce deduct dedute deeded deedee deeder deeked dekker dektur derect derere derker derrer derure detect detekt deterr detete detter deturb deubre deuced deuter dreder drubec druber dubbed dubber dubcek dubdub ducked ducker ducket ducted dudder duerer dueted duetee duette durcet durkee duttee ebbert eburru eckerd eckert ecured educed eebree eerect erbree erketu