bbbb bbci bbcm bbeb bcbc bccc bcci bccm bcec bcie bebb bebe bebi bebo beci beeb beem beic beim beme beo- bibb bibe bibi bibo bicc bice bici bico bieb bimo bio- bioc bioi bmce bmci bmic bmmi bmoc bobb bobe bobi bobo boce bocm boco boec boee boeo boi- boie boii boim bomb bome bomi boob booc booe boom c-bo cbbc cbcc cbce cbcm cbec cbee cbme ccbc cccb cccc ccci cccm ccee ccic ccii ccim ccmb ccmc ccmm ccob ccoc ccom cec- cece ceci cecm ceco ceeb ceec ceem ceim cemb ceme cemm cibc cibe cibi cibo cicc cici cico ciee ciii cimb cime cimi cimm cimo ciob cmbc cmcc cmec cmii cmmb cmmc cmmi cmoc cobb cobe cobi cobo coce coco com- comb comc come comm como coob coom ebbc ebbo ebcc ebic eboe eboo ecbc ecbe eccb eccc ecce ecci eccm ecco ecem ecib ecim ecmi eco- eeee eemo eeoc eico eiec eiei eime eimi embe embi embo emcc emco emic emii emim emme emmi i-be ibbm ibec ibie ibim icbc icbm iccb iccc icci icco icec icee icem icmc icme icmi icmm icoc icom iecc ieie ieio ieme iiie iiii iiio iimc iioi iioo imbe imbi imcb imci imco imec imme immi immo iobi ioci ioee ioii ioio iome iomo iooi iooo mbci mbim mbio mcbc mcbi mccc mcci mcic mcii mcmc mcmi mebe mebo mec- mecc mece meco meem meic memc meme memo meoc mibc micc mice mici mico miee miem miii miio mim- mime mimi mimo mio- mmcc mmci mmcm mmic mmii mmmc mmmm mobb mobe mobi mobo moco moii moio mome momi momo moob mooc mooe o-eo obbo obec obie oboe oboi ocbc occc occi oce ocee ocom oec- oecc oeec oeme oici oiii oimb oime ombe ombo omee omei omeo omic omie omim omio omo- omoe omoi omoo oobe oobi oome oooo