a-a a-b a-i aaa aab aai aan aar aay ab- aba abb abi abn abr aby ai- aia aib aii ain air aiy an- ana anb ani ann anr any ar- ara arb ari arn arr ary ay- aya ayi ayn ayr baa bab bai ban bar bay bba bbb bbi bbn bbr bby bi- bia bib bii bin bir biy bna bnb bni bnn bnr bra brb bri brn brr bry by- bya byi byn byr ia- iaa iab iai ian iar iba ibb ibi ibn ibr iby iia iib iii iin iir in- ina inb ini inn inr iny ir- ira irb iri irn irr iry iya iyr iyy n-i naa nab nai nan nar nay nba nbb nbi nbn nbr nia nib nii nin nir nna nnb nni nnn nra nrb nri nrn nrr nry nya nyn nyy ra- raa rab rai ran rar ray rba rbb rbi rbn rbr ria rib rii rin rir riy rna rnb rni rnn rnr rny rra rrb rri rrn rrr ry- rya ryn ryr ryy yaa yab yai yan yar yay ybi ybr yby yii yin yir yna ynn yny yra yrn yyb yyy