c-- ccc cch cck ccm cco ch- chc chh chk chm cho chy ckc ckh ckm cko cky cmc cmh cmk cmm cmo cmy co- coc coh cok com coo coy cyc cyk cym cyo hcc hch hck hcm hco hcy hhc hhh hhk hhm hho hhy hkh hkk hkm hko hmc hmh hmk hmm hmo hmy hoc hoh hok hom hoo hoy hy- hyc hyh hym hyo hyy kcc kch kck kcm khh khk khm kho kkc kkh kkk kkm kky kmc kmh kmk kmm kmo koc koh kok kom koo koy kyc kym kyo m-o mc- mcc mch mck mcm mco mhc mhh mhk mhm mho mkc mkh mkk mkm mko mky mmc mmh mmk mmm mmo moc moh mok mom moo moy my- myc myh myk mym myo oc- occ och ock ocm oco ohc ohh ohm oho okc okk oko om- omc omh omm omo omy oo- ooc ooh ook oom ooo oyo ycc ych yco ycy yhc ykk ykm ymc ymm ymo yoc yok yom yoo yoy yyc yyy