c-- ccc ccd cce cch cco ccp cdc cdd cde cdh cdo cdp ce- cec ced cee ceh ceo cep ch- chc chd che chh cho chp co- coc cod coe coh coo cop cpc cpd cpe cph cpo cpp dcc dcd dce dco dcp ddc ddd dde ddh ddo ddp de- dec ded dee deh deo dep dh- dhc dhd dhe dhh dho dhp doc dod doe doh doo dop dpc dpd dpe dph dpo dpp ec- ecc ecd ece ech eco ed- edc edd ede edh edo edp eec eed eee eeo eep ehc ehd ehe ehh eho ehp eo- eoc eod eoe eoh eoo eop ep- epc epd epe eph epo epp hcc hcd hce hch hco hcp hdc hdd hde hdh hdo hdp he- hec hed hee heh heo hep hhc hhd hhe hhh hho hhp hoc hod hoe hoh hoo hop hpc hpd hpe hph hpo hpp oc- occ ocd och oco ocp odc odd ode odh odo odp oec oed oee oeh oeo oep ohc ohd ohe ohh oho ohp oo- ooc ood ooh ooo oop op- opc opd ope oph opo opp p-p pcc pcd pce pch pco pcp pdc pdd pde pdh pdo pdp pec ped pee peh peo pep phc phd phe pho php poc pod poe poh poo pop ppc ppd ppe pph ppo ppp