bbbb bbeb bbet bbfc bbrc bcbc bccc bcec bcer bcet bcfc bcof bcor bctc bebb bebe bebo beck beeb beef beek beer beet befe beff befo beft beke beko beo- beof beok beor beot berc bere berk bero berr bert betc bete beto bett bftt bobb bobe bobo boce bock boco boec boee boef boeo boer boet bofe boff boke boko boob booc booe boof book boor boot bor- bore borf bork boro borr bort botb bote boto bott brcb brce breb brec bree bref brek breo brer bret brfc brkb brob broc broe brok broo bror brot brrr brtc btcc btec btek btfc btob btor btrc btrt bttb c-bo cbbc cbcc cbce cbcr cbct cbec cbee cbef cber cbet cbfb cbfc cbko cbkr cbot cbre cbrt cbtc cbtf ccbc cccb cccc cccf ccee ccfc ccff ccob ccoc ccrc ccre ccrf ccrt cctb cctc cctt cec- cece ceco cect ceeb ceec cef- cefc ceke ceor cer- cerc cere cerf cero cert cet- cete ceto cfbc cfbr cfbt cfcb cfcf cfco cffb cffr cfor cfrb cfre cfrt cftc cfte cftk cftr ckbc ckbe ckck ckco cker ckfr ckob ckoc ckoo ckor ckot ckrc cktb cobb cobe cobo coce cock coco coct cofc cofe coff coft cok- coke coko coob coof cook coot cor- corb corc core corf cork coro corr cort cotb cotc cote coto cott crbc crcc crce crcr cre- creb crec cree creo cret crfc crkc crob croc croe crok croo cror crot crrt crtc crtf ctcf ctec ctfc ctfo ctor ctot ctrc ebbc ebbo ebbr ebcc eber ebfc eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecct ecef ecfc ecfr ecko eco- ecot ecrc ecrf ecrr ect- ectc ectf ecto eeee eefe eeke eeoc eerc eero eetc eete efbr efco efeo efet efke efor eft- ekco ekeb ekek eker eket ekfc eore eotc eoto erbb erbe ercc erce ereb erec erer eret erfc erft erke erob eroc eroe eroo errc erre erro etbc etbr etcc etco etec etee eter etfb etfc etfe etoe etok etre etro ette etto f--k fccf fcot fcto febo fece feck fect feeb feek feer feet fefc fefe feff fefo feke feko feof ferb ferc fere ferk fero ferr fert fete fetr fett ffcc ffee ffff ffrr fftf fobt foce fock foco foer fofo foke foof fook foot for- forb fore fork foro forr fort fote foto fott frbc frcc free freo fret frfc frob froe frot ft-c fter ftfc kbbb kbbc kbbe kbbf kbbk kbbo kbbr kbbt kbcb kbce kbck kbco kbcr kbct kbeb kbec kbee kbef kbek kbeo kber kbet kbfb kbfc kbff kbfk kbfo kbfr kbft kbkb kbkf kbkk kbko kbkr kbob kboc kboe kbok kboo kbot kbrb kbrc kbre kbrf kbrk kbro kbrt kbtb kbtc kbte kbtf kbtk kbto kbtr kbtt kcbc kcbf kcbk kcbr kccb kccc kcck kccr kcct kceb kcec kcee kceo kcet kcfb kcfc kcfo kcft kckc kckf kckk kcko kckr kcob kcoe kcof kcor kcot kcrc kcro kcrr kcrt kctb kctc kcte kcto kebb kebc kebe kebr kebt keck keco kecr keef keek keer keet kefb kefc keff kefr keft kekb kekc keke keko keok ker- kerb kerc kere kerf kerk kero kerr kert ket- ketc kete ketf ketk keto ketr kett kfbc kfbk kfbt kfcf kfco kfcr kfeb kfer kffb kfff kffk kfkb kfok kfoo kfor kfrc kfre kfro kfrr kftc kfte kftk kftt kkbb kkbe kkbo kkbr kkbt kkcb kkck kkco kkcr kkct kkfr kkft kkkk kkob kkoo kkor kkot kkrb kkrc kkre kkrf kkrk kkro kkrr kkrt kktc kktk kobb kobc kobe kobk kobo kobr kocb kocf kock koct kofc kofe koff kofk kofo koft kokb kokc koke kokf kokk koko kokr koob kooc kook kooo koor koot korb korc kore korf kork koro korr kort kotb kotc kote kotk koto kotr kott krbb krbe krbk krbr krbt krcb krcc krce krco kreb krec kree kref krek kreo kret krfc krfe krff krfo krft krkc krke krkk krko krkr krob kroc kroe krof krok kroo kror krrb krrc krre krrf krrk krro krrr krrt krtc krtk krto krtr ktbb ktbc ktbr ktbt ktcc ktce ktck ktco ktcr ktec ktee ktek ktfb ktfc ktfo ktkb ktkc ktke ktkk ktko ktkr ktkt ktob ktoc ktoe ktok ktoo ktor ktot ktrb ktrc ktre ktrf ktrk ktro ktrr ktrt kttc kttf kttk ktto kttr kttt o-eo obbo obec ober obet obkb oboe obok obor obot obre obro ocbc occc occt oce ocee ocef ocet ocke ocre ocro ocrr oct- octe octo oec- oecc oeec oere ofcr ofek ofer off- offc offe offo offr ofor ofre oker oket okko okok okor okot okre okro okto oobe oocr ooer ooff oooo oore oort ootb orbb orbe orbo orce orco ore- oreb orec orek oreo orer orfe orff orke orko oro- oroe orof orok oror orot orro ortc orte orto otee oter otfc oto- otoe otof otok otoo otor otre otro otte otto rbbb rbbr rcbc rcbo rccb rccc rcet rcfc rctc rebb rebe rebk rebo recc rece reck recr rect reeb reef reek reet refe reff refr reft reke reko rekt reof reot rere rero rert rete reto retr rett rfef rffc rftc rkkf rob- robb robe robo robt rocc roce rock roco roer roet rofc rofe roff rofo roke rokk roko rokr roob roof rook roor root rorc rore rork roro rort rotc rote rotk roto rotr rott rrfc rrrr rtbf rtcc rtce rtee rtfb rtfc tbcb tbcc tbce tbrb tccc tcfc tctc tebo teck teco tecr tect teec teef teek teer teet tefc teff teft teke teok teor ter- terc tere terf terk tero terr tete teto tetr tett tfeb tfec tfot tftc tkof tobe tobo tobt toce tock toco toee toek toer toet toff tofo toft toke toko toof took toor toot torc tore torf tork toro torr tort totc tote toto totr tott trcc tre- trec tree tref trek treo tret trfc trfr troc troe troo trot trtc trte trtr ttbb tteo tter ttfc ttff ttoe tttt