bbbb bbcm bcbc bcbp bccc bccm bcmp bcpp bmoc bmop bobb bobo bocm boco bomb bomp boob booc boom boop bopp bpcp bpmc c-bo cbbc cbcc cbcm cbcp cbpc cbpp ccbc cccb cccc cccm cccp ccmb ccmc ccmm ccmp ccob ccoc ccom ccpm ccpp cmbc cmcc cmmb cmmc cmoc cmpc cmpp cobb cobo coco cocp com- comb comc comm como comp coob coom coop copo copp cpbc cpcm cpmp cppm mcbc mccc mcmc mcop mcpb mcpc mcpp mmcc mmcm mmmc mmmm mmpc mobb mobo moco momo moob mooc moop mopp mpcc mpmc mppc mppp obbo ocbc occc ocom ocpm ocpp ombo omo- omoo oooo opo- oppo pbcc pboc pcbc pcbm pccc pcmb pcom pcpb pcpm pcpp pmcc pmmp pmpm pmpo pobo poco pomo pomp poop pop- popc popo popp ppcc ppcm pppo pppp