a-a a-b a-i aaa aab aai aan aar aas aay ab- aba abb abi abn abr abs aby ai- aia aib aii ain air ais aiy an- ana anb ani ann anr ans any ar- ara arb ari arn arr ars ary as- asa asb asi asn asr ass asy ay- aya ayi ayn ayr ays baa bab bai ban bar bas bay bba bbb bbi bbn bbr bbs bby bi- bia bib bii bin bir bis biy bna bnb bni bnn bnr bns bra brb bri brn brr brs bry bsa bsb bsi bsn bsr bss bsy by- bya byi byn byr bys ia- iaa iab iai ian iar ias iba ibb ibi ibn ibr ibs iby iia iib iii iin iir iis in- ina inb ini inn inr ins iny ir- ira irb iri irn irr irs iry is- isa isb isi isn isr iss isy iya iyr iys iyy n-i naa nab nai nan nar nas nay nba nbb nbi nbn nbr nbs nia nib nii nin nir nis nna nnb nni nnn nns nra nrb nri nrn nrr nrs nry nsa nsb nsi nsn nsr nss nsy nya nyn nys nyy ra- raa rab rai ran rar ras ray rba rbb rbi rbn rbr rbs ria rib rii rin rir ris riy rna rnb rni rnn rnr rns rny rra rrb rri rrn rrr rrs rsa rsb rsi rsn rsr rss ry- rya ryn ryr rys ryy saa sab sai san sar sas say sba sbb sbi sbn sbr sbs sby sia sib sii sin sir sis sna snb sni snn snr sns sny sr- sra srb sri srn srr srs sry ss- ssa ssb ssi ssn ssr sss sy- sya syb syi syn syr sys yaa yab yai yan yar yas yay ybi ybr ybs yby yii yin yir yis yna ynn yns yny yra yrn yrs ysa ysb ysi ysr yss ysy yyb yys yyy