c-- ccc ccd cce ccp cct cdc cdd cde cdp cdt ce- cec ced cee cep cet cpc cpd cpe cpp cpt ctc ctd cte ctp ctt dcc dcd dce dcp dct ddc ddd dde ddp ddt de- dec ded dee dep det dpc dpd dpe dpp dpt dtc dtd dte dtp dtt ec- ecc ecd ece ect ed- edc edd ede edp edt eec eed eee eep eet ep- epc epd epe epp ept etc etd ete etp ett p-p pcc pcd pce pcp pct pdc pdd pde pdp pdt pec ped pee pep pet ppc ppd ppe ppp ppt pt- ptc ptd pte ptp ptt tcc tcd tce tcp tct tdc tdd tde tdp tdt te- tec ted tee tep tet tpc tpd tpe tpp tpt ttc ttd tte ttp ttt