-er -ey c-- ccc ccd cce ccr cct cdc cdd cde cdr cdt cdy ce- cec ced cee cer cet cey crc crd cre crr crt cry ctc ctd cte ctr ctt cty cyc cyd cye cyr cyt dcc dcd dce dcr dct ddc ddd dde ddr ddt ddy de- dec ded dee der det dey drc drd dre drr drt dry dtc dtd dte dtr dtt dty dy- dyc dyd dye dyr dyy ec- ecc ecd ece ecr ect ed- edc edd ede edr edt edy eec eed eee eer eet eey erc erd ere err ert ery etc etd ete etr ett ety eyc eyd eye eyr eyt rcc rcd rce rcr rct rdc rdd rde rdr rdt rdy re- rec red ree rer ret rey rrc rrd rrr rrt rtc rtd rte rtr rtt rty ry- ryc ryd rye ryr ryy tcc tcd tce tcr tct tdc tdd tde tdr tdt tdy te- tec ted tee ter tet tey trc trd tre trr trt try ttc ttd tte ttr ttt tty tyc tyd tye tyr tyt ycc ycd yce ycy yde ydt ydy yec yed yee yer yet yey yrc yre yrt ytc ytd yte ytr ytt yyc yye yyt yyy