a-a a-t aaa aad aaf aag aar aat ad- ada add adf adg adr adt af- afa afd aff afg afr aft ag- aga agd agf agg agr agt ar- ara ard arf arg arr art at- ata atd atf atg atr att daa dad daf dag dar dat dda ddd ddf ddg ddr ddt dfa dfd dff dfg dfr dft dga dgd dgf dgg dgr dgt dra drd drg drr drt dta dtd dtf dtg dtr dtt faa fad faf fag far fat fda fdd fdf fdg fdr fdt ffa ffd fff ffg ffr fft fga fgd fgf fgg fgr fgt fra frd frf frg frr frt fta ftd ftf ftg ftr ftt g-d gaa gad gaf gag gar gat gda gdd gdf gdr gdt gfa gfd gff gfr gft gga ggd ggg ggr ggt gra grd grf grg grr grt gta gtd gtf gtg gtr gtt ra- raa rad raf rag rar rat rda rdd rdf rdg rdr rdt rfa rfd rff rfg rfr rft rga rgd rgf rgg rgr rgt rra rrd rrf rrg rrr rrt rta rtd rtf rtg rtr rtt taa tad taf tag tar tat tda tdd tdf tdg tdr tdt tfa tfd tff tfg tfr tft tga tgf tgg tgr tgt tra trd trf trg trr trt tta ttd ttf ttg ttr ttt