ddd dde ddm ddn dds ddt de- ded dee dem den des det dmd dme dmm dmn dms dmt dnd dne dnm dnn dns dnt dsd dse dsm dsn dss dst dtd dte dtm dtn dts dtt ed- edd ede edm edn eds edt eed eee eem een ees eet em- emd eme emm emn ems emt en- end ene enm enn ens ent es- esd ese esm esn ess est etd ete etm etn ets ett mdd mde mdm mdn mds mdt med mee mem men mes met mmd mme mmm mmn mms mmt mne mnm mnn mns mnt msd mse msm msn mss mst mtd mte mtm mtn mts mtt ndd nde ndm ndn nds ndt ne- ned nee nem nen nes net nmd nme nmm nmn nms nmt nne nnm nnn nns nnt nsd nse nsm nsn nss nst ntd nte ntm ntn nts ntt sdd sde sdm sdn sds sdt se- sed see sem sen ses set smd sme smm smn sms smt snd sne snm snn sns snt ss- ssd sse ssm ssn sss sst std ste stm stn sts stt tdd tde tdm tdn tds tdt te- ted tee tem ten tes tet tmd tme tmm tmn tms tmt tnd tne tnm tnn tns tnt tsd tse tsm tsn tss tst ttd tte ttm ttn tts ttt