a-a a-b aaa aab aag aam aas aay ab- aba abb abg abm abs aby ag- aga agb agg agm ags agy ama amb amg amm ams amy as- asa asb asg asm ass asy ay- aya ays baa bab bag bam bas bay bba bbb bbg bbm bbs bby bga bgb bgg bgm bgs bma bmb bmg bmm bms bsa bsb bsg bsm bss bsy by- bya byg bym bys gaa gab gag gam gas gay gba gbg gbm gbs gby gga ggb ggg ggm ggs gma gmb gmg gmm gms gmy gsa gsb gsg gsm gss gy- gya gyb gym gys maa mab mag mam mas may mba mbb mbg mbm mbs mga mgb mgm mgs mgy mma mmb mmg mmm mms msa msb msg msm mss msy my- mya myb myg mym mys saa sab sag sam sas say sba sbb sbg sbm sbs sby sga sgb sgg sgm sgs sma smb smg smm sms smy ss- ssa ssb ssg ssm sss sy- sya syb syg sym sys yaa yab yag yam yas yay ybg ybm ybs yby yga ygm yma ymg ymm yms ysa ysb ysg ysm yss ysy yyb yyg yys yyy