-er ddd dde ddf ddg ddi ddo ddr ddt de- ded dee def deg dei deo der det dfd dfe dff dfg dfi dfo dfr dft dgd dge dgf dgg dgi dgr dgt di- did die dif dig dii dio dir dit dod doe dof dog doi doo dor dot drd dre drg dri dro drr drt dtd dte dtf dtg dti dto dtr dtt ed- edd ede edf edg edi edo edr edt eed eee eef eeg eeo eer eet ef- efd efe eff efg efi efo efr eft egd ege egf egg egi ego egr egt eid eie eif eig eii eio eir eit eo- eod eoe eof eog eoi eoo eor eot erd ere erf erg eri ero err ert etd ete etf etg eti eto etr ett fdd fde fdf fdg fdi fdo fdr fdt fed fee fef feg fei feo fer fet ffd ffe fff ffg ffi ffo ffr fft fgd fge fgf fgg fgi fgr fgt fid fie fif fig fii fir fit foe fof fog foi foo for fot frd fre frf frg fri fro frr frt ftd fte ftf ftg fti fto ftr ftt g-d gdd gde gdf gdi gdo gdr gdt ge- ged gee gef geg gei geo ger get gfd gfe gff gfi gfo gfr gft ggd ggg ggi ggo ggr ggt gid gie gif gig gii gio gir git god goe gof gog goi goo gor got grd gre grf grg gri gro grr grt gtd gte gtf gtg gti gto gtr gtt i-d i-f idd ide idf idg idi ido idr idt ie- ied iee ief ieg iei ier iet ifd ife iff ifg ifi ifo ifr ift igd ige igf igg igi igo igr igt iid iie iif iii iio iir iit io- iod ioe iof iog ioi ioo ior iot ir- ird ire irf irg iri iro irr irt itd ite itf itg iti ito itt o-i odd ode odf odg odi odo odr odt oed oee oef oeg oei oeo oer oet of- ofd ofe off ofg ofi ofo ofr oft ogd oge ogf ogg ogi ogo ogt oid oie oif oii oio oir oit oo- ood oof oog ooi ooo oor oot or- ord ore orf org ori oro orr ort ot- otd ote otf otg oti oto otr ott rdd rde rdf rdg rdi rdo rdr rdt re- red ree ref reg rei reo rer ret rfd rfe rff rfg rfi rfo rfr rft rgd rge rgf rgg rgi rgo rgr rgt rid rie rif rig rii rio rir rit rod roe rof rog roi roo ror rot rrd rrf rrg rri rrr rrt rtd rte rtf rtg rti rto rtr rtt tdd tde tdf tdg tdi tdo tdr tdt te- ted tee tef teg tei teo ter tet tfd tfe tff tfg tfi tfo tfr tft tge tgf tgg tgi tgo tgr tgt tid tie tif tig tii tio tir tit to- tod toe tof tog toi too tor tot trd tre trf trg tri tro trr trt ttd tte ttf ttg tti tto ttr ttt