a-a a-b a-i aaa aab aai aan aas aay ab- aba abb abi abn abs aby ai- aia aib aii ain ais aiy an- ana anb ani ann ans any as- asa asb asi asn ass asy ay- aya ayi ayn ays baa bab bai ban bas bay bba bbb bbi bbn bbs bby bi- bia bib bii bin bis biy bna bnb bni bnn bns bsa bsb bsi bsn bss bsy by- bya byi byn bys ia- iaa iab iai ian ias iba ibb ibi ibn ibs iby iia iib iii iin iis in- ina inb ini inn ins iny is- isa isb isi isn iss isy iya iys iyy n-i naa nab nai nan nas nay nba nbb nbi nbn nbs nia nib nii nin nis nna nnb nni nnn nns nsa nsb nsi nsn nss nsy nya nyn nys nyy saa sab sai san sas say sba sbb sbi sbn sbs sby sia sib sii sin sis sna snb sni snn sns sny ss- ssa ssb ssi ssn sss sy- sya syb syi syn sys yaa yab yai yan yas yay ybi ybs yby yii yin yis yna ynn yns yny ysa ysb ysi yss ysy yyb yys yyy