a-a a-b a-t aaa aab aag aam aat aay ab- aba abb abg abm abt aby ag- aga agb agg agm agt agy ama amb amg amm amt amy at- ata atb atg atm att ay- aya ayt baa bab bag bam bat bay bba bbb bbg bbm bbt bby bga bgb bgg bgm bgt bma bmb bmg bmm bmt bta btb btg btm btt bty by- bya byg bym byt gaa gab gag gam gat gay gba gbg gbm gbt gby gga ggb ggg ggm ggt gma gmb gmg gmm gmt gmy gta gtb gtg gtm gtt gty gy- gya gyb gym maa mab mag mam mat may mba mbb mbg mbm mbt mga mgb mgm mgt mgy mma mmb mmg mmm mmt mta mtb mtg mtm mtt my- mya myb myg mym myt taa tab tag tam tat tay tba tbb tbg tbm tbt tga tgb tgg tgm tgt tgy tma tmb tmg tmm tmt tmy tta ttb ttg ttm ttt tty tya tyg tym tyt yaa yab yag yam yat yay ybg ybm yby yga ygm yma ymg ymm ymt yta ytm ytt yyb yyg yyt yyy