-er bbb bbc bbe bbk bbo bbr bcb bcc bce bck bco bcr be- beb bec bee bek beo ber bkb bkc bke bkk bko bkr bob boc boe bok boo bor brb bre brk bro brr c-- cbb cbc cbe cbk cbo cbr ccb ccc cce cck cco ccr ce- ceb cec cee cek ceo cer ckb ckc cko co- cob coc coe cok coo cor crb crc cre crk cro crr ebb ebc ebe ebk ebo ebr ec- ecb ecc ece eck eco ecr eeb eec eee eek eeo eer ekb ekc eke eko ekr eo- eob eoc eoe eok eoo eor erb erc ere erk ero err kbb kbc kbe kbk kbo kbr kcb kcc kce kck kcr ke- keb kec kee kek keo ker kkb kkc kke kkk kkr kob koc koe kok koo kor krc krk kro krr ob- obb obc obe obk obo obr oc- ocb occ ock oco ocr oeb oec oee oeo oer okb okc oke okk oko okr oo- oob ooc ook ooo oor or- orb orc ore ork oro orr rbb rbc rbe rbk rbo rbr rcb rcc rce rco rcr re- reb rec ree rek reo rer rkb rkc rke rkk rko rob roc roe rok roo ror rrb rrc rrk rrr

bbbb bbeb bbrc bcbc bccc bcec bcer bcor bebb bebe bebo beck beeb beek beer beke beko beo- beok beor berc bere berk bero berr bobb bobe bobo boce bock boco boec boee boeo boer boke boko boob booc booe book boor bor- bore bork boro borr brcb brce breb brec bree brek breo brer brkb brob broc broe brok broo bror brrr c-bo cbbc cbcc cbce cbcr cbec cbee cber cbko cbkr cbre ccbc cccb cccc ccee ccob ccoc ccrc ccre cec- cece ceco ceeb ceec ceke ceor cer- cerc cere cero ckbc ckbe ckck ckco cker ckob ckoc ckoo ckor ckrc cobb cobe cobo coce cock coco cok- coke coko coob cook cor- corb corc core cork coro corr crbc crcc crce crcr cre- creb crec cree creo crkc crob croc croe crok croo cror ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecko eco- ecrc ecrr eeee eeke eeoc eerc eero ekco ekeb ekek eker eore erbb erbe ercc erce ereb erec erer erke erob eroc eroe eroo errc erre erro kbbb kbbc kbbe kbbk kbbo kbbr kbcb kbce kbck kbco kbcr kbeb kbec kbee kbek kbeo kber kbkb kbkk kbko kbkr kbob kboc kboe kbok kboo kbrb kbrc kbre kbrk kbro kcbc kcbk kcbr kccb kccc kcck kccr kceb kcec kcee kceo kckc kckk kcko kckr kcob kcoe kcor kcrc kcro kcrr kebb kebc kebe kebr keck keco kecr keek keer kekb kekc keke keko keok ker- kerb kerc kere kerk kero kerr kkbb kkbe kkbo kkbr kkcb kkck kkco kkcr kkkk kkob kkoo kkor kkrb kkrc kkre kkrk kkro kkrr kobb kobc kobe kobk kobo kobr kocb kock kokb kokc koke kokk koko kokr koob kooc kook kooo koor korb korc kore kork koro korr krbb krbe krbk krbr krcb krcc krce krco kreb krec kree krek kreo krkc krke krkk krko krkr krob kroc kroe krok kroo kror krrb krrc krre krrk krro krrr o-eo obbo obec ober obkb oboe obok obor obre obro ocbc occc oce ocee ocke ocre ocro ocrr oec- oecc oeec oere oker okko okok okor okre okro oobe oocr ooer oooo oore orbb orbe orbo orce orco ore- oreb orec orek oreo orer orke orko oro- oroe orok oror orro rbbb rbbr rcbc rcbo rccb rccc rebb rebe rebk rebo recc rece reck recr reeb reek reke reko rere rero rob- robb robe robo rocc roce rock roco roer roke rokk roko rokr roob rook roor rorc rore rork roro rrrr

b-r-k bbbee bbook bcock be-er be-ro bebek beber becco becke beebe beeke beker bekke bekko bekok berbe berck berec berek berk- berke berko berob beroe berok beror berre bo-bo bobek bobko boboc bobok bobr bobre bocce bocke bocor boece boeck boeke boero bokeo boker bokko bokok bokor booce boock booco booer booke booko boore borbo borce borck borec boree borek borer borko boro- borok boroo borre borro brcko brece breck breek breer breke breo- breoc brere brobo broce brock broek broer broke brook brrrr c-cor ccccc cebec ceber ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer cerke cero- ceroc cerre cerro co-bo co-co cobbe cobre cocc- cocce cocco coceo cocke coker cokk- cooee cooer cooke coore corbe corbo corce core- coree corer corke coro- corre crebe crece creek creer creke creo- croce crock croco croke crooe crook crore ebber ebeko ebook ecker eecke eeeee ekeko ekker eorre erbbe erber erere erkec erkko erkoc eroor erore error k-rob kebbe kebek keber kebob kecer keere kekec kerek kerre ko-ko kobee kober kocek kocer kocke koker kokko kokor kokre korbe korbo korck korec korek korke koror korro kre-o kreek kreke kreo- krock kroke o-r-b obock oboro obreb obrok ocker ockro ocoee ocr-b ocree oeco- okeke okere okker okobo okoc okoro oo-er oocre ooooo orbec oreck oreco oreo- orere orero orobe orobo oroco oroer oroke r-co- rebbe rebec reber recce recco recke reece reere rekke rere- reree rerob ro-ro robbe robbo robec rober robo- robor rocco rocke rocko rocor roero rokee roker rokke rokkk rooer rooke roore rorer rorke

bbbbbb bebook becker beebee beeker bekker bekoor bekoro berbee berbeo berber berceo bercke bereke bereko berere berker berrer bobber bobeck bobeke bobrek bobrok boccob bocker bocock boeber boerre bokere bokoro boober booboo booker borbor borcke boroko borore bororo breere brekke brocco brocor broeck broker brokke brokkr broock brooke ceecee cerco- cobber cobbob cocco- cockee cocker cococo coerce coo-er coocoo cookee cooker cookoo corker correk crecco creeke crocco crocer croker crooke e-book ecobee eebree ekero erbree k-rock kebber kebero keeker keokee kerber kerker koboko kokoro kookoo korber koreke korere korero korkor kororo korrek krecko kreker krokek oberek ockere ocreo- oerbke okerer ookroo oooooo orrock rebbec rebeck reboke rebook rebore recock recook recore recork