a-a a-b aaa aab aag aan aar aas aay ab- aba abb abg abn abr abs aby ag- aga agb agg agn agr ags agy an- ana anb ang ann anr ans any ar- ara arb arg arn arr ars ary as- asa asb asg asn asr ass asy ay- aya ayn ayr ays baa bab bag ban bar bas bay bba bbb bbg bbn bbr bbs bby bga bgb bgg bgn bgr bgs bna bnb bng bnn bnr bns bra brb brg brn brr brs bry bsa bsb bsg bsn bsr bss bsy by- bya byg byn byr bys gaa gab gag gan gar gas gay gba gbg gbn gbr gbs gby gga ggb ggg ggn ggr ggs gna gnb gnn gnr gns gra grb grg grn grr grs gry gsa gsb gsg gsn gsr gss gy- gya gyb gyn gyr gys naa nab nag nan nar nas nay nba nbb nbg nbn nbr nbs nga ngb ngg ngn ngs nna nnb nng nnn nns nra nrb nrg nrn nrr nrs nry nsa nsb nsg nsn nsr nss nsy nya nyg nyn nys nyy ra- raa rab rag ran rar ras ray rba rbb rbg rbn rbr rbs rga rgb rgg rgn rgr rgs rna rnb rng rnn rnr rns rny rra rrb rrg rrn rrr rrs rsa rsb rsg rsn rsr rss ry- rya ryg ryn ryr rys ryy saa sab sag san sar sas say sba sbb sbg sbn sbr sbs sby sga sgb sgg sgn sgr sgs sna snb sng snn snr sns sny sr- sra srb srg srn srr srs sry ss- ssa ssb ssg ssn ssr sss sy- sya syb syg syn syr sys yaa yab yag yan yar yas yay ybg ybr ybs yby yga yna yng ynn yns yny yra yrg yrn yrs ysa ysb ysg ysr yss ysy yyb yyg yys yyy