-er -ey c-- ccc ccd cce cco ccr ccs cct cdc cdd cde cdo cdr cds cdt cdy ce- cec ced cee ceo cer ces cet cey co- coc cod coe coo cor cos cot coy crc crd cre cro crr crs crt cry csc csd cse cso csr css cst csy ctc ctd cte cto ctr cts ctt cty cyc cyd cye cyo cyr cys cyt dcc dcd dce dco dcr dcs dct ddc ddd dde ddo ddr dds ddt ddy de- dec ded dee deo der des det dey doc dod doe doo dor dos dot doy drc drd dre dro drr drs drt dry dsc dsd dse dso dsr dss dst dsy dtc dtd dte dto dtr dts dtt dty dy- dyc dyd dye dyo dyr dys dyy ec- ecc ecd ece eco ecr ecs ect ed- edc edd ede edo edr eds edt edy eec eed eee eeo eer ees eet eey eo- eoc eod eoe eoo eor eos eot erc erd ere ero err ers ert ery es- esc esd ese eso esr ess est esy etc etd ete eto etr ets ett ety eyc eyd eye eyo eyr eys eyt oc- occ ocd oco ocr ocs oct odc odd ode odo odr ods odt oec oed oee oeo oer oes oet oey oo- ooc ood ooo oor oos oot or- orc ord ore oro orr ors ort ory os- osc osd ose oso osr oss ost ot- otc otd ote oto otr ots ott oyd oye oyo oys rcc rcd rce rco rcr rcs rct rdc rdd rde rdo rdr rds rdt rdy re- rec red ree reo rer res ret rey roc rod roe roo ror ros rot roy rrc rrd rrr rrs rrt rsc rsd rse rso rsr rss rst rtc rtd rte rto rtr rts rtt rty ry- ryc ryd rye ryo ryr rys ryy scc scd sce sco scr scs sct sdc sdd sde sdo sdr sds sdt sdy se- sec sed see seo ser ses set sey soc sod soe soo sor sos sot soy sr- src srd sre sro srr srs srt sry ss- ssc ssd sse sso ssr sss sst stc std ste sto str sts stt sty sy- syc syd sye syr sys syt tcc tcd tce tco tcr tcs tct tdc tdd tde tdo tdr tds tdt tdy te- tec ted tee teo ter tes tet tey to- toc tod toe too tor tos tot toy trc trd tre tro trr trs trt try tsc tsd tse tso tsr tss tst tsy ttc ttd tte tto ttr tts ttt tty tyc tyd tye tyo tyr tys tyt ycc ycd yce yco ycs ycy yde ydo yds ydt ydy yec yed yee yeo yer yes yet yey yoc yod yoe yoo yor yos yot yoy yrc yre yro yrs yrt ysc yse yso ysr yss yst ysy ytc ytd yte yto ytr yts ytt yyc yye yys yyt yyy