-er ddd dde ddg ddn ddr dds de- ded dee deg den der des dgd dge dgg dgn dgr dgs dnd dne dng dnn dnr dns drd dre drg drn drr drs dsd dse dsg dsn dsr dss ed- edd ede edg edn edr eds eed eee eeg een eer ees egd ege egg egn egr egs en- end ene eng enn enr ens erd ere erg ern err ers es- esd ese esg esn esr ess g-d gdd gde gdn gdr gds ge- ged gee geg gen ger ges ggd ggg ggn ggr ggs gnd gne gnn gnr gns grd gre grg grn grr grs gsd gse gsg gsn gsr gss ndd nde ndg ndn ndr nds ne- ned nee neg nen ner nes ngd nge ngg ngn ngs nne nng nnn nns nrd nre nrg nrn nrr nrs nsd nse nsg nsn nsr nss rdd rde rdg rdn rdr rds re- red ree reg ren rer res rgd rge rgg rgn rgr rgs rnd rng rnn rnr rns rrd rrg rrn rrr rrs rsd rse rsg rsn rsr rss sdd sde sdg sdn sdr sds se- sed see seg sen ser ses sgd sge sgg sgn sgr sgs snd sne sng snn snr sns sr- srd sre srg srn srr srs ss- ssd sse ssg ssn ssr sss