a-a a-b aaa aab aad aag aar aay ab- aba abb abd abg abr aby ad- ada adb add adg adr ady ag- aga agb agd agg agr agy ar- ara arb ard arg arr ary ay- aya ayd ayr baa bab bad bag bar bay bba bbb bbd bbg bbr bby bda bdb bdd bdg bdr bdy bga bgb bgd bgg bgr bra brb brd brg brr bry by- bya byd byg byr daa dab dad dag dar day dba dbb dbd dbg dbr dby dda ddb ddd ddg ddr ddy dga dgd dgg dgr dra drb drd drg drr dry dy- dya dyb dyd dyr dyy g-d gaa gab gad gag gar gay gba gbd gbg gbr gby gda gdb gdd gdr gga ggb ggd ggg ggr gra grb grd grg grr gry gy- gya gyb gyd gyr ra- raa rab rad rag rar ray rba rbb rbd rbg rbr rda rdb rdd rdg rdr rdy rga rgb rgd rgg rgr rra rrb rrd rrg rrr ry- rya ryd ryg ryr ryy yaa yab yad yag yar yay ybg ybr yby yda ydg ydy yga yra yrg yyb yyg yyy