-er ddd dde ddm ddn ddr dds ddt de- ded dee dem den der des det dmd dme dmm dmn dmr dms dmt dnd dne dnm dnn dnr dns dnt drd dre drm drn drr drs drt dsd dse dsm dsn dsr dss dst dtd dte dtm dtn dtr dts dtt ed- edd ede edm edn edr eds edt eed eee eem een eer ees eet em- emd eme emm emn emr ems emt en- end ene enm enn enr ens ent erd ere erm ern err ers ert es- esd ese esm esn esr ess est etd ete etm etn etr ets ett m-r mdd mde mdm mdn mdr mds mdt med mee mem men mer mes met mmd mme mmm mmn mmr mms mmt mne mnm mnn mnr mns mnt mrd mre mrm mrn mrr mrs mrt msd mse msm msn msr mss mst mtd mte mtm mtn mtr mts mtt ndd nde ndm ndn ndr nds ndt ne- ned nee nem nen ner nes net nmd nme nmm nmn nmr nms nmt nne nnm nnn nns nnt nrd nre nrm nrn nrr nrs nrt nsd nse nsm nsn nsr nss nst ntd nte ntm ntn ntr nts ntt rdd rde rdm rdn rdr rds rdt re- red ree rem ren rer res ret rmd rme rmm rmn rmr rms rmt rnd rnm rnn rnr rns rnt rrd rrm rrn rrr rrs rrt rsd rse rsm rsn rsr rss rst rtd rte rtm rtn rtr rts rtt sdd sde sdm sdn sdr sds sdt se- sed see sem sen ser ses set smd sme smm smn smr sms smt snd sne snm snn snr sns snt sr- srd sre srm srn srr srs srt ss- ssd sse ssm ssn ssr sss sst std ste stm stn str sts stt tdd tde tdm tdn tdr tds tdt te- ted tee tem ten ter tes tet tmd tme tmm tmn tmr tms tmt tnd tne tnm tnn tnr tns tnt trd tre trm trn trr trs trt tsd tse tsm tsn tsr tss tst ttd tte ttm ttn ttr tts ttt