-er ddd dde ddf ddg ddi ddr ddt de- ded dee def deg dei der det dfd dfe dff dfg dfi dfr dft dgd dge dgf dgg dgi dgr dgt di- did die dif dig dii dir dit drd dre drg dri drr drt dtd dte dtf dtg dti dtr dtt ed- edd ede edf edg edi edr edt eed eee eef eeg eer eet ef- efd efe eff efg efi efr eft egd ege egf egg egi egr egt eid eie eif eig eii eir eit erd ere erf erg eri err ert etd ete etf etg eti etr ett fdd fde fdf fdg fdi fdr fdt fed fee fef feg fei fer fet ffd ffe fff ffg ffi ffr fft fgd fge fgf fgg fgi fgr fgt fid fie fif fig fii fir fit frd fre frf frg fri frr frt ftd fte ftf ftg fti ftr ftt g-d gdd gde gdf gdi gdr gdt ge- ged gee gef geg gei ger get gfd gfe gff gfi gfr gft ggd ggg ggi ggr ggt gid gie gif gig gii gir git grd gre grf grg gri grr grt gtd gte gtf gtg gti gtr gtt i-d i-f idd ide idf idg idi idr idt ie- ied iee ief ieg iei ier iet ifd ife iff ifg ifi ifr ift igd ige igf igg igi igr igt iid iie iif iii iir iit ir- ird ire irf irg iri irr irt itd ite itf itg iti itt rdd rde rdf rdg rdi rdr rdt re- red ree ref reg rei rer ret rfd rfe rff rfg rfi rfr rft rgd rge rgf rgg rgi rgr rgt rid rie rif rig rii rir rit rrd rrf rrg rri rrr rrt rtd rte rtf rtg rti rtr rtt tdd tde tdf tdg tdi tdr tdt te- ted tee tef teg tei ter tet tfd tfe tff tfg tfi tfr tft tge tgf tgg tgi tgr tgt tid tie tif tig tii tir tit trd tre trf trg tri trr trt ttd tte ttf ttg tti ttr ttt