ddd ddf ddg ddi ddo dds ddt dfd dff dfg dfi dfo dfs dft dgd dgf dgg dgi dgs dgt di- did dif dig dii dio dis dit dod dof dog doi doo dos dot dsd dsf dsg dsi dso dss dst dtd dtf dtg dti dto dts dtt fdd fdf fdg fdi fdo fds fdt ffd fff ffg ffi ffo ffs fft fgd fgf fgg fgi fgs fgt fid fif fig fii fis fit fof fog foi foo fos fot fsd fsf fsg fsi fso fss fst ftd ftf ftg fti fto fts ftt g-d gdd gdf gdi gdo gds gdt gfd gff gfi gfo gfs gft ggd ggg ggi ggo ggs ggt gid gif gig gii gio gis git god gof gog goi goo gos got gsd gsf gsg gsi gso gss gst gtd gtf gtg gti gto gts gtt i-d i-f idd idf idg idi ido ids idt ifd iff ifg ifi ifo ifs ift igd igf igg igi igo igs igt iid iif iii iio iis iit io- iod iof iog ioi ioo ios iot is- isd isf isg isi iso iss ist itd itf itg iti ito its itt o-i odd odf odg odi odo ods odt of- ofd off ofg ofi ofo ofs oft ogd ogf ogg ogi ogo ogs ogt oid oif oii oio ois oit oo- ood oof oog ooi ooo oos oot os- osd osf osg osi oso oss ost ot- otd otf otg oti oto ots ott sdd sdf sdg sdi sdo sds sdt sfd sff sfg sfi sfo sfs sft sgd sgf sgg sgi sgo sgs sgt sid sif sig sii sio sis sit sod sof sog soi soo sos sot ss- ssd ssf ssg ssi sso sss sst std stf stg sti sto sts stt tdd tdf tdg tdi tdo tds tdt tfd tff tfg tfi tfo tfs tft tgf tgg tgi tgo tgs tgt tid tif tig tii tio tis tit to- tod tof tog toi too tos tot tsd tsf tsg tsi tso tss tst ttd ttf ttg tti tto tts ttt