bbbb bbcm bbeb bbrc bcbc bccc bccm bcec bcer bebb bebe beck beeb beek beem beer beke beme berc bere berk berm berr bmce brcb brce breb brec bree brek brem brer brkb brmc brrm brrr cbbc cbcc cbce cbcm cbcr cbec cbee cber cbkm cbkr cbme cbre cbrm ccbc cccb cccc cccm ccee cckm ccmb ccmc ccmm ccrc ccre cec- cece cecm ceeb ceec ceem ceke cemb ceme cemm cemr cer- cerc cere ckbc ckbe ckck ckcm ckem cker ckrc ckrm cmbc cmcc cmec cmmb cmmc cmrr crbc crcc crce crcr cre- creb crec cree crem crkc crmb ebbc ebbr ebcc eber ecbc ecbe eccb eccc ecce eccm ecem ecrc ecrm ecrr eeee eeke eerc ekeb ekek eker embe embr emcc emek emer emme emre erbb erbe ercc erce ereb erec erem erer erke ermc erme errc erre kbbb kbbc kbbe kbbk kbbm kbbr kbcb kbce kbck kbcr kbeb kbec kbee kbek kber kbkb kbkk kbkr kbmb kbmc kbme kbmr kbrb kbrc kbre kbrk kcbc kcbk kcbr kccb kccc kcck kccr kceb kcec kcee kckc kckk kckm kckr kcmb kcmc kcme kcmk kcmm kcmr kcrc kcrr kebb kebc kebe kebr keck kecr keek keem keer kekb kekc keke kemb kemc keme kemm kemr ker- kerb kerc kere kerk kerm kerr kkbb kkbe kkbr kkcb kkck kkcm kkcr kkkk kkmc kkmk kkmr kkrb kkrc kkre kkrk kkrr kmbc kmbr kmcb kmcc kmce kmcm kmcr kmem kmer kmke kmkk kmme kmmk kmmm kmmr kmrb kmrc kmrr krbb krbe krbk krbm krbr krcb krcc krce krcm kreb krec kree krek krem krkc krke krkk krkr krmb krmc krme krmr krrb krrc krre krrk krrm krrr mcbc mccc mckk mcmc mcrc mebe mec- mecc mece meck mecr meek meem meer meke memc meme memr mer- merb merc mere merk merm mker mmcc mmcm mmmc mmmm mmrc mr-c mrbb mrbm mrcb mrcc mrce mreb mree mrkr mrmc mrrc rbbb rbbr rbmk rcbc rccb rccc rebb rebe rebk recc rece reck recm recr reeb reek reem reke reme rere rrkm rrmc rrrr