c-- ccc ccf cch cck cco ccp cfc cff cfh cfk cfo cfp ch- chc chf chh chk cho chp ckc ckh cko co- coc cof coh cok coo cop cpc cpf cph cpk cpo cpp fcc fcf fck fco fcp ffc fff ffh ffk ffo ffp fhc fhf fhh fho fhp fkc fkf fkk fkp foc fof foh fok foo fop fpc fph fpk fpo fpp hcc hcf hch hck hco hcp hfc hff hfh hfk hfo hfp hhc hhf hhh hhk hho hhp hkf hkh hkk hko hkp hoc hof hoh hok hoo hop hpc hpf hph hpk hpo hpp kcc kch kck kcp kfc kff kfh kfo khf khh khk kho kkc kkh kkk kkp koc kof koh kok koo kop kpc kpf kph kpk kpo kpp oc- occ ocf och ock oco ocp of- ofc off ofo ofp ohc ohf ohh oho ohp okc okk oko okp oo- ooc oof ooh ook ooo oop op- opc opf oph opk opo opp p-p pcc pcf pch pck pco pcp pfc pff pfk pfo pfp phc phf phk pho php pkc pkf pko pkp poc pof poh pok poo pop ppc ppf pph ppk ppo ppp