-er ddd dde ddm ddn ddr ddt de- ded dee dem den der det dmd dme dmm dmn dmr dmt dnd dne dnm dnn dnr dnt drd dre drm drn drr drt dtd dte dtm dtn dtr dtt ed- edd ede edm edn edr edt eed eee eem een eer eet em- emd eme emm emn emr emt en- end ene enm enn enr ent erd ere erm ern err ert etd ete etm etn etr ett m-r mdd mde mdm mdn mdr mdt med mee mem men mer met mmd mme mmm mmn mmr mmt mne mnm mnn mnr mnt mrd mre mrm mrn mrr mrt mtd mte mtm mtn mtr mtt ndd nde ndm ndn ndr ndt ne- ned nee nem nen ner net nmd nme nmm nmn nmr nmt nne nnm nnn nnt nrd nre nrm nrn nrr nrt ntd nte ntm ntn ntr ntt rdd rde rdm rdn rdr rdt re- red ree rem ren rer ret rmd rme rmm rmn rmr rmt rnd rnm rnn rnr rnt rrd rrm rrn rrr rrt rtd rte rtm rtn rtr rtt tdd tde tdm tdn tdr tdt te- ted tee tem ten ter tet tmd tme tmm tmn tmr tmt tnd tne tnm tnn tnr tnt trd tre trm trn trr trt ttd tte ttm ttn ttr ttt