-er -ey c-- ccc ccd cce ccp ccr cct cdc cdd cde cdp cdr cdt cdy ce- cec ced cee cep cer cet cey cpc cpd cpe cpp cpr cpt crc crd cre crp crr crt cry ctc ctd cte ctp ctr ctt cty cyc cyd cye cyp cyr cyt dcc dcd dce dcp dcr dct ddc ddd dde ddp ddr ddt ddy de- dec ded dee dep der det dey dpc dpd dpe dpp dpr dpt drc drd dre drp drr drt dry dtc dtd dte dtp dtr dtt dty dy- dyc dyd dye dyp dyr dyy ec- ecc ecd ece ecr ect ed- edc edd ede edp edr edt edy eec eed eee eep eer eet eey ep- epc epd epe epp epr ept erc erd ere erp err ert ery etc etd ete etp etr ett ety eyc eyd eye eyp eyr eyt p-p pcc pcd pce pcp pcr pct pdc pdd pde pdp pdr pdt pec ped pee pep per pet pey ppc ppd ppe ppp ppr ppt prc prd pre prp prr prt pry pt- ptc ptd pte ptp ptr ptt pty py- pyc pyd pye pyr pyt rcc rcd rce rcp rcr rct rdc rdd rde rdp rdr rdt rdy re- rec red ree rep rer ret rey rpc rpd rpe rpp rpr rpt rrc rrd rrp rrr rrt rtc rtd rte rtp rtr rtt rty ry- ryc ryd rye ryr ryy tcc tcd tce tcp tcr tct tdc tdd tde tdp tdr tdt tdy te- tec ted tee tep ter tet tey tpc tpd tpe tpp tpr tpt trc trd tre trp trr trt try ttc ttd tte ttp ttr ttt tty tyc tyd tye typ tyr tyt ycc ycd yce ycp ycy yde ydt ydy yec yed yee yep yer yet yey ypd yrc yre yrp yrt ytc ytd yte ytp ytr ytt yyc yye yyt yyy