a-a a-b aaa aab aak aam aas aay ab- aba abb abk abm abs aby aka akb akk akm aks ama amb amk amm ams amy as- asa asb ask asm ass asy ay- aya ayk ays baa bab bak bam bas bay bba bbb bbk bbm bbs bby bka bkb bkk bkm bks bma bmb bmk bmm bms bsa bsb bsk bsm bss bsy by- bya byk bym bys ka- kaa kab kak kam kas kay kba kbb kbk kbm kbs kkb kkk kkm kks kky kma kmb kmk kmm kms ksa ksb ksk ksm kss kya kym kys maa mab mak mam mas may mba mbb mbk mbm mbs mka mkb mkk mkm mks mky mma mmb mmk mmm mms msa msb msk msm mss msy my- mya myb myk mym mys saa sab sak sam sas say sba sbb sbk sbm sbs sby sk- ska skb skk skm sks sky sma smb smk smm sms smy ss- ssa ssb ssk ssm sss sy- sya syb syk sym sys yaa yab yak yam yas yay ybm ybs yby yka ykk ykm yma ymm yms ysa ysb ysk ysm yss ysy yyb yys yyy