c-- ccc ccd cch ccm cco cdc cdd cdh cdm cdo ch- chc chd chh chm cho cmc cmd cmh cmm cmo co- coc cod coh com coo dcc dcd dcm dco ddc ddd ddh ddm ddo dh- dhc dhd dhh dhm dho dmc dmd dmh dmm dmo doc dod doh dom doo hcc hcd hch hcm hco hdc hdd hdh hdm hdo hhc hhd hhh hhm hho hmc hmd hmh hmm hmo hoc hod hoh hom hoo m-o mc- mcc mcd mch mcm mco mdc mdd mdh mdm mdo mhc mhd mhh mhm mho mmc mmd mmh mmm mmo moc mod moh mom moo oc- occ ocd och ocm oco odc odd odh odm odo ohc ohd ohh ohm oho om- omc omd omh omm omo oo- ooc ood ooh oom ooo