c-- ccc ccd cch cco ccp cdc cdd cdh cdo cdp cdy ch- chc chd chh cho chp chy co- coc cod coh coo cop coy cpc cpd cph cpo cpp cyc cyd cyo cyp dcc dcd dco dcp ddc ddd ddh ddo ddp ddy dh- dhc dhd dhh dho dhp doc dod doh doo dop doy dpc dpd dph dpo dpp dy- dyc dyd dyo dyp dyy hcc hcd hch hco hcp hcy hdc hdd hdh hdo hdp hdy hhc hhd hhh hho hhp hhy hoc hod hoh hoo hop hoy hpc hpd hph hpo hpp hpy hy- hyc hyd hyh hyo hyp hyy oc- occ ocd och oco ocp odc odd odh odo odp ohc ohd ohh oho ohp oo- ooc ood ooh ooo oop op- opc opd oph opo opp opy oyd oyo p-p pcc pcd pch pco pcp pdc pdd pdh pdo pdp phc phd pho php phy poc pod poh poo pop poy ppc ppd pph ppo ppp py- pyc pyd pyo ycc ycd ych yco ycp ycy ydo ydy yhc yoc yod yoo yop yoy ypd ypo yyc yyy