-ey c-- ccc ccd cce cco cct cdc cdd cde cdo cdt cdy ce- cec ced cee ceo cet cey co- coc cod coe coo cot coy ctc ctd cte cto ctt cty cyc cyd cye cyo cyt dcc dcd dce dco dct ddc ddd dde ddo ddt ddy de- dec ded dee deo det dey doc dod doe doo dot doy dtc dtd dte dto dtt dty dy- dyc dyd dye dyo dyy ec- ecc ecd ece eco ect ed- edc edd ede edo edt edy eec eed eee eeo eet eey eo- eoc eod eoe eoo eot etc etd ete eto ett ety eyc eyd eye eyo eyt oc- occ ocd oco oct odc odd ode odo odt oec oed oee oeo oet oey oo- ooc ood ooo oot ot- otc otd ote oto ott oyd oye oyo tcc tcd tce tco tct tdc tdd tde tdo tdt tdy te- tec ted tee teo tet tey to- toc tod toe too tot toy ttc ttd tte tto ttt tty tyc tyd tye tyo tyt ycc ycd yce yco ycy yde ydo ydt ydy yec yed yee yeo yet yey yoc yod yoe yoo yot yoy ytc ytd yte yto ytt yyc yye yyt yyy