a-a a-b aaa aab aag aan aas aay ab- aba abb abg abn abs aby ag- aga agb agg agn ags agy an- ana anb ang ann ans any as- asa asb asg asn ass asy ay- aya ayn ays baa bab bag ban bas bay bba bbb bbg bbn bbs bby bga bgb bgg bgn bgs bna bnb bng bnn bns bsa bsb bsg bsn bss bsy by- bya byg byn bys gaa gab gag gan gas gay gba gbg gbn gbs gby gga ggb ggg ggn ggs gna gnb gnn gns gsa gsb gsg gsn gss gy- gya gyb gyn gys naa nab nag nan nas nay nba nbb nbg nbn nbs nga ngb ngg ngn ngs nna nnb nng nnn nns nsa nsb nsg nsn nss nsy nya nyg nyn nys nyy saa sab sag san sas say sba sbb sbg sbn sbs sby sga sgb sgg sgn sgs sna snb sng snn sns sny ss- ssa ssb ssg ssn sss sy- sya syb syg syn sys yaa yab yag yan yas yay ybg ybs yby yga yna yng ynn yns yny ysa ysb ysg yss ysy yyb yyg yys yyy