exer exo- exor exrx exte extr kbbb kbbc kbbe kbbk kbbo kbbr kbbt kbbu kbcb kbce kbck kbco kbcr kbct kbcu kbeb kbec kbee kbek kbeo kber kbet kbex kbkb kbkk kbko kbkr kbob kboc kboe kbok kboo kbot kbox kbrb kbrc kbre kbrk kbro kbrt kbru kbrx kbtb kbtc kbte kbtk kbto kbtr kbtt kbub kbuc kbue kbuk kbur kbut kbuu kbux kbxb kbxr kbxt kbxx kc-x kcbc kcbk kcbr kcbu kcbx kccb kccc kcck kccr kcct kccu kceb kcec kcee kceo kcet kceu kckc kckk kcko kckr kckx kcob kcoe kcor kcot kcou kcox kcrc kcro kcrr kcrt kcru kcrx kctb kctc kcte kcto kctu kctx kcub kcue kcuk kcxr kebb kebc kebe kebr kebt kebu keck keco kecr keek keer keet kekb kekc keke keko keku keok ker- kerb kerc kere kerk kero kerr kert keru kerx ket- ketc kete ketk keto ketr kett ketu ketx keur kexb kexo kexx kkbb kkbe kkbo kkbr kkbt kkcb kkck kkco kkcr kkct kkex kkkk kkob kkoo kkor kkot kkrb kkrc kkre kkrk kkro kkrr kkrt kkrx kktc kktk kktu kktx kkut kkuu kkxk kkxt kkxx kobb kobc kobe kobk kobo kobr kobu kocb kock koct kokb kokc koke kokk koko kokr koku kokx koob kooc kook kooo koor koot koou korb korc kore kork koro korr kort koru kotb kotc kote kotk koto kotr kott kotu koub koue kour kout kouu koxc koxe koxr krbb krbe krbk krbr krbt krbx krcb krcc krce krco krcu kreb krec kree krek kreo kret kreu krex krkc krke krkk krko krkr krku krkx krob kroc kroe krok kroo kror krox krrb krrc krre krrk krro krrr krrt krrx krtc krtk krto krtr krtx kruc krue kruk krur krux krxb krxk krxo krxr krxt krxx ktbb ktbc ktbr ktbt ktbu ktcc ktce ktck ktco ktcr ktcx ktec ktee ktek ktex ktkb ktkc ktke ktkk ktko ktkr ktkt ktku ktkx ktob ktoc ktoe ktok ktoo ktor ktot ktox ktrb ktrc ktre ktrk ktro ktrr ktrt ktru ktrx kttc kttk ktto kttr kttt kttu kttx ktub ktuc ktux ktxb ktxc ktxk ktxo ktxr ktxt kubb kubc kube kubo kubr kubu kucb kucc kuce kuco kucr kuek kueu kuke kukk kuku kuok kuoo kurb kure kurk kuro kurr kurt kuru kute kuto kutr kutt kutu kutx kuub kuuk kuur kuuu kuxx kxbr kxbt kxbx kxeo kxet kxex kxkc kxkk kxkt kxku kxkx kxok kxoo kxor kxox kxrb kxrc kxre kxrk kxro kxrr kxrx kxtc kxte kxtk kxto kxtt kxtx kxxe kxxk kxxo kxxr kxxt kxxx o-eo obbo obec ober obet obex obkb oboe obok obor obot obox obre obro ocbc occc occt oce ocee ocet ocke ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere okcu oker oket okko okok okor okot okre okro okto okur oobe oocr ooer ooku oooo oore oort ootb orbb orbe orbo orbu orce orco ore- oreb orec orek oreo orer orex orke orko oro- oroe orok oror orot orro ortc orte orto orub otee oter oto- otoe otok otoo otor otre otro otte otto ottu otur oucc ouer our- oure ouro ourt out- outb oute outo ouu- oxer oxo- oxox oxxo rbbb rbbr rcbc rcbo rccb rccc rcet rctc rebb rebe rebk rebo rebu recc rece reck recr rect recu reeb reek reet reke reko rekt reot reou rere rero rert reru rete reto retr rett reue reuk reut reuu reux rexx rob- robb robe robo robt robu rocc roce rock roco roer roet roke rokk roko rokr roku roob rook roor root roox rorc rore rork roro rort roru rotc rote rotk roto rotr rott roub roue rouk rout roux roxo rrrr rtcc rtce rtee rtex rubb rube rubu ruce ruck ruct ruer ruet ruke rukk ruku ruok rurc rure ruro ruru rute ruto rutt rutu tbcb tbcc tbce tbox tbrb tccc tccu tctc tebo tebu teck teco tecr tect teec teek teer teet teke teok teor ter- terc tere terk tero terr teru tete teto tetr tett tetu tetx teuk teut text tobe tobo tobt tobu toce tock toco toee toek toer toet toke toko toku took toor toot torc tore tork toro torr tort toru torx totc tote toto totr tott touk tour tout tox- toxo toxt trcc tre- trec tree trek treo tret treu trex troc troe troo trot trou trox trtc trte trtr trub truc true truk trut truu trux ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuck tuco tuer tuet tuke tuko tuor turb turc ture turk turo turr turt turu tute tuto tutt tutu tuuo txtr ubbe ubbo ubek uber ubet uboc ucbc ucrc ucut uext ukcc ukek ukeu ukko ukok ukrc ukur uocc uoke uor- uore urbe ure- uret urex urke uro- urok uroo urox urre urte uruk urur urut utec uter utor utto uttu uuoc uuuu uxor uxue xbee xbox xeer xeko xer- xero xert xexe xobc xoco xoro xote xout xoxo xtro xuxu xxxo xxxx

-tree b-r-k bbbee bbook bcock be-er be-ro bebek beber bebot bebox becco becke becue becut beebe beeke beete beeut beker bekke bekko bekok beote beour berbe berck bercu berec berek beret berk- berke berko berob beroe berok beror berre berru berte berto betee beter betke betoo betor betou betre bett- bette betto beuer beure beute bo-bo bobek bobet bobko boboc bobok bobr bobre bocce bocet bocke bocor boece boeck boeke boekt boero boeur bokeo boker boket bokko bokok bokor booce boock booco booer booke booko boore boort booru bootx borbo borce borck borec boree borek borer boret borex borko borku boro- borok boroo borot borou borox borre borro borut botet botok botou botox botro botte bottu bouce bouck bouee bouer bouet bouex bouke bouko boure boute bouto boutx boxbe boxee boxer brcko bre-x brebu brece breck breek breer breet breke breo- breoc brere breto brett bretx breu- breux brobo broce brock broek broer broke brook broto broue brouk brout brrrr bruce bruck bruer bruet bruke brute btc-e btr-t bubbe buber bucco bucek buceo bucet bucko bucku bucur buker buket