-ey c-- ccc ccd cce cco cdc cdd cde cdo cdy ce- cec ced cee ceo cey co- coc cod coe coo coy cyc cyd cye cyo dcc dcd dce dco ddc ddd dde ddo ddy de- dec ded dee deo dey doc dod doe doo doy dy- dyc dyd dye dyo dyy ec- ecc ecd ece eco ed- edc edd ede edo edy eec eed eee eeo eey eo- eoc eod eoe eoo eyc eyd eye eyo oc- occ ocd oco odc odd ode odo oec oed oee oeo oey oo- ooc ood ooo oyd oye oyo ycc ycd yce yco ycy yde ydo ydy yec yed yee yeo yey yoc yod yoe yoo yoy yyc yye yyy