bbbb bbcm bbeb bcbc bccc bccm bcec bcuc bebb bebe becu beeb beem beme bemu bmce bubb bube bubu bucc buce bucu buem bueu bum- bumb cbbc cbcc cbce cbcm cbcu cbec cbee cbme ccbc cccb cccc cccm cccu ccee ccmb ccmc ccmm ccuc cebu cec- cece cecm ceeb ceec ceem cemb ceme cemm cemu cmbc cmcc cmec cmmb cmmc cub- cubb cube cucc cuce cucm cum- cume ebbc ebcc ecbc ecbe eccb eccc ecce eccm ecem eeee embe emcc emeu emme emmu eubc eumc mcbc mccc mcmc mebe mec- mecc mece meem memc meme memu meum mmcc mmcm mmmc mmmm mube muc- mucc muce mucu muee mume mumm mumu ubbe ucbc ucmc umb- umbe umec uuuu