a-a a-b a-i aaa aab aai aak aan aas aay ab- aba abb abi abk abn abs aby ai- aia aib aii aik ain ais aiy aka akb aki akk akn aks an- ana anb ani ank ann ans any as- asa asb asi ask asn ass asy ay- aya ayi ayk ayn ays baa bab bai bak ban bas bay bba bbb bbi bbk bbn bbs bby bi- bia bib bii bik bin bis biy bka bkb bkk bkn bks bna bnb bni bnk bnn bns bsa bsb bsi bsk bsn bss bsy by- bya byi byk byn bys ia- iaa iab iai ian ias iba ibb ibi ibk ibn ibs iby iia iib iii iin iis ika ikb iki ikk iks in- ina inb ini ink inn ins iny is- isa isb isi isk isn iss isy iya iys iyy ka- kaa kab kai kak kan kas kay kba kbb kbi kbk kbn kbs kia kib kii kik kin kis kkb kki kkk kkn kks kky kn- kna kni knk knn ksa ksb ksi ksk ksn kss kya kyn kys n-i naa nab nai nak nan nas nay nba nbb nbi nbk nbn nbs nia nib nii nik nin nis nka nki nkk nkn nks nky nna nnb nni nnk nnn nns nsa nsb nsi nsk nsn nss nsy nya nyk nyn nys nyy saa sab sai sak san sas say sba sbb sbi sbk sbn sbs sby sia sib sii sik sin sis sk- ska skb ski skk sks sky sna snb sni snk snn sns sny ss- ssa ssb ssi ssk ssn sss sy- sya syb syi syk syn sys yaa yab yai yak yan yas yay ybi ybs yby yii yin yis yka yki ykk ykn yna ynk ynn yns yny ysa ysb ysi ysk yss ysy yyb yys yyy