-er -ey c-- ccc ccd cce ccn ccr ccs cdc cdd cde cdn cdr cds cdy ce- cec ced cee cen cer ces cey cn- cnc cnd cne cnn cnr cns cny crc crd cre crn crr crs cry csc csd cse csn csr css csy cyc cyd cye cyn cyr cys dcc dcd dce dcn dcr dcs ddc ddd dde ddn ddr dds ddy de- dec ded dee den der des dey dnc dnd dne dnn dnr dns dny drc drd dre drn drr drs dry dsc dsd dse dsn dsr dss dsy dy- dyc dyd dye dyn dyr dys dyy ec- ecc ecd ece ecn ecr ecs ed- edc edd ede edn edr eds edy eec eed eee een eer ees eey en- enc end ene enn enr ens eny erc erd ere ern err ers ery es- esc esd ese esn esr ess esy eyc eyd eye eyn eyr eys ncc ncd nce ncn ncr ncs ndc ndd nde ndn ndr nds ndy ne- nec ned nee nen ner nes ney nnc nne nnn nns nrc nrd nre nrn nrr nrs nry nsc nsd nse nsn nsr nss nsy nyc nyd nye nyn nys nyy rcc rcd rce rcn rcr rcs rdc rdd rde rdn rdr rds rdy re- rec red ree ren rer res rey rnc rnd rnn rnr rns rny rrc rrd rrn rrr rrs rsc rsd rse rsn rsr rss ry- ryc ryd rye ryn ryr rys ryy scc scd sce scn scr scs sdc sdd sde sdn sdr sds sdy se- sec sed see sen ser ses sey snc snd sne snn snr sns sny sr- src srd sre srn srr srs sry ss- ssc ssd sse ssn ssr sss sy- syc syd sye syn syr sys ycc ycd yce ycs ycy yde ydn yds ydy yec yed yee yen yer yes yey ynd yne ynn yns yny yrc yre yrn yrs ysc yse ysr yss ysy yyc yye yys yyy