a-a a-b a-i a-t aaa aab aag aai aan aat aay ab- aba abb abg abi abn abt aby ag- aga agb agg agi agn agt agy ai- aia aib aig aii ain ait aiy an- ana anb ang ani ann ant any at- ata atb atg ati atn att ay- aya ayi ayn ayt baa bab bag bai ban bat bay bba bbb bbg bbi bbn bbt bby bga bgb bgg bgi bgn bgt bi- bia bib big bii bin bit biy bna bnb bng bni bnn bnt bta btb btg bti btn btt bty by- bya byg byi byn byt gaa gab gag gai gan gat gay gba gbg gbi gbn gbt gby gga ggb ggg ggi ggn ggt gia gib gig gii gin git giy gna gnb gni gnn gnt gta gtb gtg gti gtn gtt gty gy- gya gyb gyn ia- iaa iab iag iai ian iat iba ibb ibg ibi ibn ibt iby iga igb igg igi ign igt igy iia iib iii iin iit in- ina inb ing ini inn int iny ita itb itg iti itn itt ity iya iyt iyy n-i naa nab nag nai nan nat nay nba nbb nbg nbi nbn nbt nga ngb ngg ngi ngn ngt nia nib nig nii nin nit nna nnb nng nni nnn nnt nta ntb ntg nti ntn ntt nya nyg nyn nyt nyy taa tab tag tai tan tat tay tba tbb tbg tbi tbn tbt tga tgb tgg tgi tgn tgt tgy tia tib tig tii tin tit tiy tna tnb tng tni tnn tnt tta ttb ttg tti ttn ttt tty tya tyg tyn tyt yaa yab yag yai yan yat yay ybg ybi yby yga yig yii yin yit yna yng ynn yny yta ytn ytt yyb yyg yyt yyy