bbbb bbcm bbrc bcbc bccc bccm bcor bmoc bobb bobo bocm boco bomb boob booc boom boor bor- borm boro borr brcb brmc brob broc brom broo bror brrm brrr c-bo cbbc cbcc cbcm cbcr cbrm ccbc cccb cccc cccm ccmb ccmc ccmm ccob ccoc ccom ccrc cmbc cmcc cmmb cmmc cmoc cmrr cobb cobo coco com- comb comc comm como comr coob coom cor- corb corc corm coro corr crbc crcc crcr crmb crmo crob croc crom croo cror mcbc mccc mcmc mcrc mmcc mmcm mmmc mmmm mmor mmrc mobb mobo moco momo moob mooc moor morb moro mr-c mrbb mrbm mrcb mrcc mrmc mrrc obbo obor obro ocbc occc ocom ocro ocrr ombo omo- omoo omor omro oocr oooo orbb orbo orco ormo oro- orom oror orro rbbb rbbr rcbc rcbo rccb rccc rob- robb robo rocc roco romb romm romo roob room roor rorc roro rrmc rrrr