a-a aaa aad aaf aag aay ad- ada add adf adg ady af- afa afd aff afg afy ag- aga agd agf agg agy ay- aya ayd ayf daa dad daf dag day dda ddd ddf ddg ddy dfa dfd dff dfg dga dgd dgf dgg dy- dya dyd dyy faa fad faf fag fay fda fdd fdf fdg ffa ffd fff ffg ffy fga fgd fgf fgg fy- fya g-d gaa gad gaf gag gay gda gdd gdf gfa gfd gff gfy gga ggd ggg gy- gya gyd gyf yaa yad yaf yag yay yda ydg ydy yfa yfd yff yga yyf yyg yyy