-er bbb bbc bbe bbk bbo bbr bcb bcc bce bck bco bcr bcv be- beb bec bee bek beo ber bev bkb bkc bke bkk bko bkr bkv bob boc boe bok boo bor bov brb bre brk bro brr brv bvb bvc bve bvk bvo bvr bvv c-- cbb cbc cbe cbk cbo cbr cbv ccb ccc cce cck cco ccr ccv ce- ceb cec cee cek ceo cer cev ckb ckc cko co- cob coc coe cok coo cor cov crb crc cre crk cro crr crv cvb cvc cve cvk cvo cvr cvv ebb ebc ebe ebk ebo ebr ebv ec- ecb ecc ece eck eco ecr ecv eeb eec eee eek eeo eer eev ekb ekc eke eko ekr ekv eo- eob eoc eoe eok eoo eor erb erc ere erk ero err erv evb evc eve evo evr evv kbb kbc kbe kbk kbo kbr kcb kcc kce kck kcr ke- keb kec kee kek keo ker kev kkb kkc kke kkk kkr kkv kob koc koe kok koo kor krc krk kro krr krv kvb kvk kvo kvr kvv ob- obb obc obe obk obo obr obv oc- ocb occ ock oco ocr ocv oeb oec oee oeo oer okb okc oke okk oko okr oo- oob ooc ook ooo oor oov or- orb orc ore ork oro orr orv ov- ovb ovc ove ovo ovv rbb rbc rbe rbk rbo rbr rcb rcc rce rco rcr rcv re- reb rec ree rek reo rer rev rkb rkc rke rkk rko rkv rob roc roe rok roo ror rov rrb rrc rrk rrr rvb rvc rve rvo rvr rvv v-e vbc vbk vbo vbr vbv vcc vce vco vcr veb vec vee vek veo ver vkb vob voc voe vok voo vor vov vrb vrc vre vrk vrr vvb vvc vvo vvr vvv

bbbb bbeb bbrc bcbc bccc bcec bcer bcor bcvo bebb bebe bebo beck beeb beek beer beke beko beo- beok beor berc bere berk bero berr bevo bobb bobe bobo boce bock boco boec boee boeo boer boke boko boob booc booe book boor bor- bore bork boro borr bove bovo brcb brce breb brec bree brek breo brer brev brkb brob broc broe brok broo bror brrr c-bo cbbc cbcc cbce cbcr cbec cbee cber cbko cbkr cbre cbvb cbve cbvr ccbc cccb cccc cccv ccee ccob ccoc ccrc ccre ccvo cec- cece ceco ceeb ceec ceke ceor cer- cerc cere cero cevo ckbc ckbe ckck ckco ckcv cker ckob ckoc ckoo ckor ckrc ckvo cobb cobe cobo coce cock coco cok- coke coko coob cook cor- corb corc core cork coro corr cove covo crbc crcc crce crcr cre- creb crec cree creo crkc crob croc croe crok croo cror cvcc cver cvrr ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecko eco- ecrc ecrr ecrv eeee eeke eeoc eerc eero ekco ekeb ekek eker eore erbb erbe ercc erce ereb erec erer erev erke erob eroc eroe eroo errc erre erro erve ever evoe evoo evre evvk kbbb kbbc kbbe kbbk kbbo kbbr kbcb kbce kbck kbco kbcr kbeb kbec kbee kbek kbeo kber kbev kbkb kbkk kbko kbkr kbkv kbob kboc kboe kbok kboo kbov kbrb kbrc kbre kbrk kbro kbrv kbvb kbvc kbvo kbvr kcbc kcbk kcbr kccb kccc kcck kccr kccv kceb kcec kcee kceo kckc kckk kcko kckr kckv kcob kcoe kcor kcrc kcro kcrr kcrv kcvk kcvo kcvr kcvv kebb kebc kebe kebr keck keco kecr keek keer kekb kekc keke keko keok ker- kerb kerc kere kerk kero kerr kerv keve kkbb kkbe kkbo kkbr kkcb kkck kkco kkcr kkkk kkob kkoo kkor kkov kkrb kkrc kkre kkrk kkro kkrr kkrv kkvr kkvv kobb kobc kobe kobk kobo kobr kocb kock kokb kokc koke kokk koko kokr koob kooc kook kooo koor koov korb korc kore kork koro korr korv kovc kove kovk kovo kovr krbb krbe krbk krbr krcb krcc krce krco kreb krec kree krek kreo krev krkc krke krkk krko krkr krkv krob kroc kroe krok kroo kror krov krrb krrc krre krrk krro krrr krvb krvc krve krvk krvo krvr krvv kvbc kvbr kvcb kvcc kvce kvck kvco kvcr kvcv kvec kver kvob kvoc kvoe kvok kvoo kvor kvov kvrc kvre kvro kvrr kvrv kvvr kvvv 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 orve orvr ovee over ovo- ovoo ovre rbbb rbbr rcbc rcbo rccb rccc rcvr rebb rebe rebk rebo recc rece reck recr reeb reek reev reke reko rere rero reve revo rob- robb robe robo rocc roce rock roco roer roev roke rokk roko rokr roob rook roor rorc rore rork roro rove rovo rrrr rv-c rver vbcc vecc veck veer veke veor ver- verb vere verk vero veve vevo vkor voce voer voke vooc voor vor- vore voro vovk vreo vroc vver vvob vvvv

b-r-k bbbee bbook bcock be-er be-ro bebek beber becco becke becov beebe beeke beeve beker bekke bekko bekok berbe berck berec berek berk- berke berko berob beroe berok beror berre bevce bever bevke bevor bo-bo bobek bobko boboc bobok bobov bobr bobre bocce bocke bocor boece boeck boeke boero bokeo boker bokko bokok bokor bokov booce boock booco booer booke booko boore borbo borce borck borec boree borek borer borko boro- borok boroo borov borre borro borve borvo bovec bovee brcko brece breck breek breer breke breo- breoc brere breve brobo broce brock broek broer broke brook brrrr c-cor c-evo ccccc cebec ceber ceco- ceere cekov ceoce ceoor cerc- cerce cerco cerec cerer cerke cero- ceroc cerre cerro cervo co-bo co-co cobbe cobre cocc- cocce cocco coceo cocke coeve coker cokk- cooee cooer cooke coore corbe corbo corce