a-a a-b a-t aaa aab aag aan aas aat aay ab- aba abb abg abn abs abt aby ag- aga agb agg agn ags agt agy an- ana anb ang ann ans ant any as- asa asb asg asn ass ast asy at- ata atb atg atn ats att ay- aya ayn ays ayt baa bab bag ban bas bat bay bba bbb bbg bbn bbs bbt bby bga bgb bgg bgn bgs bgt bna bnb bng bnn bns bnt bsa bsb bsg bsn bss bst bsy bta btb btg btn bts btt bty by- bya byg byn bys byt gaa gab gag gan gas gat gay gba gbg gbn gbs gbt gby gga ggb ggg ggn ggs ggt gna gnb gnn gns gnt gsa gsb gsg gsn gss gst gta gtb gtg gtn gts gtt gty gy- gya gyb gyn gys naa nab nag nan nas nat nay nba nbb nbg nbn nbs nbt nga ngb ngg ngn ngs ngt nna nnb nng nnn nns nnt nsa nsb nsg nsn nss nst nsy nta ntb ntg ntn nts ntt nya nyg nyn nys nyt nyy saa sab sag san sas sat say sba sbb sbg sbn sbs sbt sby sga sgb sgg sgn sgs sgt sna snb sng snn sns snt sny ss- ssa ssb ssg ssn sss sst sta stb stg stn sts stt sty sy- sya syb syg syn sys syt taa tab tag tan tas tat tay tba tbb tbg tbn tbs tbt tga tgb tgg tgn tgs tgt tgy tna tnb tng tnn tns tnt tsa tsb tsg tsn tss tst tsy tta ttb ttg ttn tts ttt tty tya tyg tyn tys tyt yaa yab yag yan yas yat yay ybg ybs yby yga yna yng ynn yns yny ysa ysb ysg yss yst ysy yta ytn yts ytt yyb yyg yys yyt yyy