-er ddd dde ddg ddr dds de- ded dee deg der des dgd dge dgg dgr dgs drd dre drg drr drs dsd dse dsg dsr dss ed- edd ede edg edr eds eed eee eeg eer ees egd ege egg egr egs erd ere erg err ers es- esd ese esg esr ess g-d gdd gde gdr gds ge- ged gee geg ger ges ggd ggg ggr ggs grd gre grg grr grs gsd gse gsg gsr gss rdd rde rdg rdr rds re- red ree reg rer res rgd rge rgg rgr rgs rrd rrg rrr rrs rsd rse rsg rsr rss sdd sde sdg sdr sds se- sed see seg ser ses sgd sge sgg sgr sgs sr- srd sre srg srr srs ss- ssd sse ssg ssr sss