-er ddd dde ddf ddg ddi ddo ddr de- ded dee def deg dei deo der dfd dfe dff dfg dfi dfo dfr dgd dge dgf dgg dgi dgr di- did die dif dig dii dio dir dod doe dof dog doi doo dor drd dre drg dri dro drr ed- edd ede edf edg edi edo edr eed eee eef eeg eeo eer ef- efd efe eff efg efi efo efr egd ege egf egg egi ego egr eid eie eif eig eii eio eir eo- eod eoe eof eog eoi eoo eor erd ere erf erg eri ero err fdd fde fdf fdg fdi fdo fdr fed fee fef feg fei feo fer ffd ffe fff ffg ffi ffo ffr fgd fge fgf fgg fgi fgr fid fie fif fig fii fir foe fof fog foi foo for frd fre frf frg fri fro frr g-d gdd gde gdf gdi gdo gdr ge- ged gee gef geg gei geo ger gfd gfe gff gfi gfo gfr ggd ggg ggi ggo ggr gid gie gif gig gii gio gir god goe gof gog goi goo gor grd gre grf grg gri gro grr i-d i-f idd ide idf idg idi ido idr ie- ied iee ief ieg iei ier ifd ife iff ifg ifi ifo ifr igd ige igf igg igi igo igr iid iie iif iii iio iir io- iod ioe iof iog ioi ioo ior ir- ird ire irf irg iri iro irr o-i odd ode odf odg odi odo odr oed oee oef oeg oei oeo oer of- ofd ofe off ofg ofi ofo ofr ogd oge ogf ogg ogi ogo oid oie oif oii oio oir oo- ood oof oog ooi ooo oor or- ord ore orf org ori oro orr rdd rde rdf rdg rdi rdo rdr re- red ree ref reg rei reo rer rfd rfe rff rfg rfi rfo rfr rgd rge rgf rgg rgi rgo rgr rid rie rif rig rii rio rir rod roe rof rog roi roo ror rrd rrf rrg rri rrr