a-a a-b a-i aaa aab aai aam aas aay ab- aba abb abi abm abs aby ai- aia aib aii aim ais aiy ama amb ami amm ams amy as- asa asb asi asm ass asy ay- aya ayi ays baa bab bai bam bas bay bba bbb bbi bbm bbs bby bi- bia bib bii bim bis biy bma bmb bmi bmm bms bsa bsb bsi bsm bss bsy by- bya byi bym bys ia- iaa iab iai iam ias iba ibb ibi ibm ibs iby iia iib iii iim iis im- ima imb imi imm ims imy is- isa isb isi ism iss isy iya iym iys iyy maa mab mai mam mas may mba mbb mbi mbm mbs mi- mia mib mii mim mis miy mma mmb mmi mmm mms msa msb msi msm mss msy my- mya myb mym mys saa sab sai sam sas say sba sbb sbi sbm sbs sby sia sib sii sim sis sma smb smi smm sms smy ss- ssa ssb ssi ssm sss sy- sya syb syi sym sys yaa yab yai yam yas yay ybi ybm ybs yby yii yim yis yma ymi ymm yms ysa ysb ysi ysm yss ysy yyb yys yyy