ddd ddf ddg ddi ddt dfd dff dfg dfi dft dgd dgf dgg dgi dgt di- did dif dig dii dit dtd dtf dtg dti dtt fdd fdf fdg fdi fdt ffd fff ffg ffi fft fgd fgf fgg fgi fgt fid fif fig fii fit ftd ftf ftg fti ftt g-d gdd gdf gdi gdt gfd gff gfi gft ggd ggg ggi ggt gid gif gig gii git gtd gtf gtg gti gtt i-d i-f idd idf idg idi idt ifd iff ifg ifi ift igd igf igg igi igt iid iif iii iit itd itf itg iti itt tdd tdf tdg tdi tdt tfd tff tfg tfi tft tgf tgg tgi tgt tid tif tig tii tit ttd ttf ttg tti ttt