-er ddd dde ddf ddg ddi ddr dds de- ded dee def deg dei der des dfd dfe dff dfg dfi dfr dfs dgd dge dgf dgg dgi dgr dgs di- did die dif dig dii dir dis drd dre drg dri drr drs dsd dse dsf dsg dsi dsr dss ed- edd ede edf edg edi edr eds eed eee eef eeg eer ees ef- efd efe eff efg efi efr efs egd ege egf egg egi egr egs eid eie eif eig eii eir eis erd ere erf erg eri err ers es- esd ese esf esg esi esr ess fdd fde fdf fdg fdi fdr fds fed fee fef feg fei fer fes ffd ffe fff ffg ffi ffr ffs fgd fge fgf fgg fgi fgr fgs fid fie fif fig fii fir fis frd fre frf frg fri frr frs fsd fse fsf fsg fsi fsr fss g-d gdd gde gdf gdi gdr gds ge- ged gee gef geg gei ger ges gfd gfe gff gfi gfr gfs ggd ggg ggi ggr ggs gid gie gif gig gii gir gis grd gre grf grg gri grr grs gsd gse gsf gsg gsi gsr gss i-d i-f idd ide idf idg idi idr ids ie- ied iee ief ieg iei ier ies ifd ife iff ifg ifi ifr ifs igd ige igf igg igi igr igs iid iie iif iii iir iis ir- ird ire irf irg iri irr irs is- isd ise isf isg isi isr iss rdd rde rdf rdg rdi rdr rds re- red ree ref reg rei rer res rfd rfe rff rfg rfi rfr rfs rgd rge rgf rgg rgi rgr rgs rid rie rif rig rii rir ris rrd rrf rrg rri rrr rrs rsd rse rsf rsg rsi rsr rss sdd sde sdf sdg sdi sdr sds se- sed see sef seg sei ser ses sfd sfe sff sfg sfi sfr sfs sgd sge sgf sgg sgi sgr sgs sid sie sif sig sii sir sis sr- srd sre srf srg sri srr srs ss- ssd sse ssf ssg ssi ssr sss