-er ddd dde ddg ddn ddr dds ddt de- ded dee deg den der des det dgd dge dgg dgn dgr dgs dgt dnd dne dng dnn dnr dns dnt drd dre drg drn drr drs drt dsd dse dsg dsn dsr dss dst dtd dte dtg dtn dtr dts dtt ed- edd ede edg edn edr eds edt eed eee eeg een eer ees eet egd ege egg egn egr egs egt en- end ene eng enn enr ens ent erd ere erg ern err ers ert es- esd ese esg esn esr ess est etd ete etg etn etr ets ett g-d gdd gde gdn gdr gds gdt ge- ged gee geg gen ger ges get ggd ggg ggn ggr ggs ggt gnd gne gnn gnr gns gnt grd gre grg grn grr grs grt gsd gse gsg gsn gsr gss gst gtd gte gtg gtn gtr gts gtt ndd nde ndg ndn ndr nds ndt ne- ned nee neg nen ner nes net ngd nge ngg ngn ngs ngt nne nng nnn nns nnt nrd nre nrg nrn nrr nrs nrt nsd nse nsg nsn nsr nss nst ntd nte ntg ntn ntr nts ntt rdd rde rdg rdn rdr rds rdt re- red ree reg ren rer res ret rgd rge rgg rgn rgr rgs rgt rnd rng rnn rnr rns rnt rrd rrg rrn rrr rrs rrt rsd rse rsg rsn rsr rss rst rtd rte rtg rtn rtr rts rtt sdd sde sdg sdn sdr sds sdt se- sed see seg sen ser ses set sgd sge sgg sgn sgr sgs sgt snd sne sng snn snr sns snt sr- srd sre srg srn srr srs srt ss- ssd sse ssg ssn ssr sss sst std ste stg stn str sts stt tdd tde tdg tdn tdr tds tdt te- ted tee teg ten ter tes tet tge tgg tgn tgr tgs tgt tnd tne tng tnn tnr tns tnt trd tre trg trn trr trs trt tsd tse tsg tsn tsr tss tst ttd tte ttg ttn ttr tts ttt