a-a a-b a-i aaa aab aag aai aan aay ab- aba abb abg abi abn aby ag- aga agb agg agi agn agy ai- aia aib aig aii ain aiy an- ana anb ang ani ann any ay- aya ayi ayn baa bab bag bai ban bay bba bbb bbg bbi bbn bby bga bgb bgg bgi bgn bi- bia bib big bii bin biy bna bnb bng bni bnn by- bya byg byi byn gaa gab gag gai gan gay gba gbg gbi gbn gby gga ggb ggg ggi ggn gia gib gig gii gin giy gna gnb gni gnn gy- gya gyb gyn ia- iaa iab iag iai ian iba ibb ibg ibi ibn iby iga igb igg igi ign igy iia iib iii iin in- ina inb ing ini inn iny iya iyy n-i naa nab nag nai nan nay nba nbb nbg nbi nbn nga ngb ngg ngi ngn nia nib nig nii nin nna nnb nng nni nnn nya nyg nyn nyy yaa yab yag yai yan yay ybg ybi yby yga yig yii yin yna yng ynn yny yyb yyg yyy