c-- ccc cch ccm cco ccp ch- chc chh chm cho chp cmc cmh cmm cmo cmp co- coc coh com coo cop cpc cph cpm cpo cpp hcc hch hcm hco hcp hhc hhh hhm hho hhp hmc hmh hmm hmo hmp hoc hoh hom hoo hop hpc hph hpm hpo hpp m-o mc- mcc mch mcm mco mcp mhc mhh mhm mho mhp mmc mmh mmm mmo mmp moc moh mom moo mop mpc mph mpm mpo mpp oc- occ och ocm oco ocp ohc ohh ohm oho ohp om- omc omh omm omo omp oo- ooc ooh oom ooo oop op- opc oph opm opo opp p-p pcc pch pcm pco pcp phc phm pho php pmc pmh pmm pmo pmp poc poh pom poo pop ppc pph ppm ppo ppp