a-a a-b a-i aaa aab aag aai aan aar aay ab- aba abb abg abi abn abr aby ag- aga agb agg agi agn agr agy ai- aia aib aig aii ain air aiy an- ana anb ang ani ann anr any ar- ara arb arg ari arn arr ary ay- aya ayi ayn ayr baa bab bag bai ban bar bay bba bbb bbg bbi bbn bbr bby bga bgb bgg bgi bgn bgr bi- bia bib big bii bin bir biy bna bnb bng bni bnn bnr bra brb brg bri brn brr bry by- bya byg byi byn byr gaa gab gag gai gan gar gay gba gbg gbi gbn gbr gby gga ggb ggg ggi ggn ggr gia gib gig gii gin gir giy gna gnb gni gnn gnr gra grb grg gri grn grr gry gy- gya gyb gyn gyr ia- iaa iab iag iai ian iar iba ibb ibg ibi ibn ibr iby iga igb igg igi ign igr igy iia iib iii iin iir in- ina inb ing ini inn inr iny ir- ira irb irg iri irn irr iry iya iyr iyy n-i naa nab nag nai nan nar nay nba nbb nbg nbi nbn nbr nga ngb ngg ngi ngn nia nib nig nii nin nir nna nnb nng nni nnn nra nrb nrg nri nrn nrr nry nya nyg nyn nyy ra- raa rab rag rai ran rar ray rba rbb rbg rbi rbn rbr rga rgb rgg rgi rgn rgr ria rib rig rii rin rir riy rna rnb rng rni rnn rnr rny rra rrb rrg rri rrn rrr ry- rya ryg ryn ryr ryy yaa yab yag yai yan yar yay ybg ybi ybr yby yga yig yii yin yir yna yng ynn yny yra yrg yrn yyb yyg yyy