bbbb bbeb bbet bbox bbpr bebb bebe bebo beeb beek beep beer beet beke beko beo- beok beor beot bepo bere berk bero berr bert bete beto bett bkpr bkpt bobb bobe bobo boee boeo boep boer boet boke boko boob booe book boop boor boot boox bope bopp bor- bore bork boro borr bort botb bote boto bott bpoe bpot breb bree brek breo brep brer bret brex brkb brob broe brok broo bror brot brox brrr btbp btek btex btob btor btrt bttb ebbo ebbr eber eboe eboo ebor ebox ebpo ebro eeee eeke eero eete eext ekeb ekek eker eket ekpe ekpo eore eoto epee eper epor epot epox eppo eppp eprb epro eprp epte epxp er-x erbb erbe ereb erer eret erke erob eroe eroo erpe erre erro etbr etee eter etoe etok etox etre etro ette etto exer exo- exor expo expr expt exrx exte extr kbbb kbbe kbbk kbbo kbbr kbbt kbeb kbee kbek kbeo kber kbet kbex kbkb kbkk kbko kbkr kbob kboe kbok kboo kbot kbox kbpe kbpk kbpo kbpr kbpt kbrb kbre kbrk kbro kbrt kbrx kbtb kbte kbtk kbto kbtr kbtt kbxb kbxr kbxt kbxx kebb kebe kebr kebt keek keep keer keet kekb keke keko keok kep- kepe kept kepx ker- kerb kere kerk kero kerp kerr kert kerx ket- kete ketk keto ketp ketr kett ketx kexb kexo kexx kkbb kkbe kkbo kkbr kkbt kkex kkkk kkob kkoo kkor kkot kkpk kkpt kkrb kkre kkrk kkro kkrr kkrt kkrx kktk kktx kkxk kkxt kkxx kobb kobe kobk kobo kobr kokb koke kokk koko kokp kokr kokx koob kook kooo koop koor koot kopb kope kopp kopr kopt korb kore kork koro korr kort kotb kote kotk koto kotr kott koxe koxr kpbb kpbe kpbr kpbx kpek kper kpet kpke kpkk kpkr kpkx kpob kpoe kpok kpoo kpop kppk kppo kppp kppr kprb kpre kprk kpro kprp kprr kprt kpte kpto kptr kptt kptx kpxp kpxr krbb krbe krbk krbr krbt krbx kreb kree krek kreo kret krex krke krkk krko krkr krkx krob kroe krok kroo krop kror krox krpr krpt krpx krrb krre krrk krro krrr krrt krrx krtk krto krtr krtx krxb krxk krxo krxp krxr krxt krxx ktbb ktbr ktbt ktee ktek ktep ktex ktkb ktke ktkk ktko ktkr ktkt ktkx ktob ktoe ktok ktoo ktop ktor ktot ktox ktpk ktpo ktpr ktpt ktrb ktre ktrk ktro ktrp ktrr ktrt ktrx kttk ktto kttp kttr kttt kttx ktxb ktxk ktxo ktxp ktxr ktxt kxbr kxbt kxbx kxeo kxet kxex kxkk kxkt kxkx kxok kxoo kxor kxox kxpk kxpo kxpr kxpt kxrb kxre kxrk kxro kxrp kxrr kxrx kxte kxtk kxto kxtt kxtx kxxe kxxk kxxo kxxr kxxt kxxx o-eo obbo ober obet obex obkb oboe obok obor obot obox obre obro oere oker oket okko okok okor okot okpe okpo okre okro okto oobe ooer oooo oore oort ootb ootp opep oper opet opex opo- opor oppo opto orbb orbe orbo ore- oreb orek oreo orer orex orke orko oro- oroe orok oror orot orpe orro orte orto otee otep oter oto- otoe otok otoo otor otpp otre otro otte otto oxep oxer oxo- oxox oxxo pbpk peek peep peer peet peke pekk peko peor pepe pepo per- pere perk pero perp perr pert pete peto petr pett pobo poer poet poke poko pook poop poor poot pop- pope popo popp popt porb pore pork poro porr port pote poto pott pper pppo pppp pptt pre- preb pree prek prep pret prex pro- prob proe proo prop prot prox prtp prtr pter ptop ptox pttk rbbb rbbr rebb rebe rebk rebo reeb reek reep reet reke reko rekt reop reot repe repo repp repr rept rere rero rert rete reto retr rett rexx rob- robb robe robo robt roer roet roke rokk roko rokr roob rook roop roor root roox rope ropo rore rork roro rort rote rotk roto rotr rott roxo rpet rpob rpoe rrrr rtee rtex rttp tbox tbrb tbtp tebo teek teer teet teke teok teor tepe tepp ter- tere terk tero terp terr tete teto tetr tett tetx text tobe tobo tobt toee toek toer toet toke toko took toor toot top- tope topo topp topt tore tork toro torp torr tort torx tote toto totr tott tox- toxo toxt tper tpke tppp tppr tpte tptp tptr tre- tree trek treo tret trex troe troo trop trot trox trpe trpp trte trtr ttbb tteo tter ttoe ttop tttt txtr xbee xbox xeer xeko xer- xero xert xexe xoro xorp xote xoxo xper xpot xpto xrep xtep xtro xxxo xxxx