bbbb bbcm bbgm bbmg bbrc bbrg bcbc bcbg bccc bccm bcor bcru bcuc bmoc bobb bobo bobu bocm boco bocu bogg bogo bomb bomu boob booc boog boom boor bor- borg borm boro borr boru boum bour brcb brmc brob broc brog brom broo bror brou brrm brrr bruc brug brum bubb bubo bubu bucc buco bucu bugg bugo bum- bumb bur- burb burg burm buro burr buru c-bo cbbc cbcc cbcm cbcr cbcu cbgb cbrm ccbc cccb cccc cccm cccu ccgc ccmb ccmc ccmm ccob ccoc ccom ccrc ccrg ccuc cgcc cgcg cgmc cgro cmbc cmcc cmmb cmmc cmoc cmrr cobb cobo cobu coco cocu cogo com- comb comc comm como comr comu coob coom cor- corb corc corg corm coro corr coub cour crbc crbu crcc crcr crmb crmo crob croc crom croo cror crub crug crum cub- cubb cucc cucm cum- curb curo curr gbbo gbmc gc-c gcbc gccc gcmc gcrg gggg gmmr gobo gocr gogo gomb gomo gomu goog goom goor gorb gorg gorm goro gorr gou- goug goum gour grbr grcc grob groc grog grom groo gror grou grrr grub grug grum grur gubb gubu gugb gugg gugu gumb gumm gumo gurb gurg guro gurr guru mbou mcbc mccc mcmc mcrc mcug mgrm mmcc mmcg mmcm mmmc mmmm mmor mmrc mobb mobo moco mogg mogo mogu momo momu moob mooc moog moor morb morg moro moru mour mr-c mrbb mrbm mrcb mrcc mrmc mrrc mubo muc- mucc mucu mugg mugo mugu mumm mumo mumu murc murg muro murr muru obbo obor obro ocbc occc ocom ocro ocrr ocum ocur ogb ogog ogou ogro ogum ombo ombu omo- omoo omor omro omuo oocr oooo orbb orbo orbu orco orgo ormo oro- orom oror orro orub orum oucc our- ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcgc rcrg rmrg rob- robb robo robu rocc roco rogg rogo romb romm romo roob roog room roor rorc roro roru roub roum rrmc rrrr rrum rubb rubu rugg rumb rumm rumo rurc ruro ruru ubbo uboc ucbc ucmc ucom ucrc ugcc ugcg uggo ugro ugur uguu umb- umbo umgo ummg ummo umor uocc uomo uor- urgu uro- urom uroo urum urur uuoc uuuu