a-a a-b a-i a-t aaa aab aai aam aas aat aay ab- aba abb abi abm abs abt aby ai- aia aib aii aim ais ait aiy ama amb ami amm ams amt amy as- asa asb asi asm ass ast asy at- ata atb ati atm ats att ay- aya ayi ays ayt baa bab bai bam bas bat bay bba bbb bbi bbm bbs bbt bby bi- bia bib bii bim bis bit biy bma bmb bmi bmm bms bmt bsa bsb bsi bsm bss bst bsy bta btb bti btm bts btt bty by- bya byi bym bys byt ia- iaa iab iai iam ias iat iba ibb ibi ibm ibs ibt iby iia iib iii iim iis iit im- ima imb imi imm ims imt imy is- isa isb isi ism iss ist isy ita itb iti itm its itt ity iya iym iys iyt iyy maa mab mai mam mas mat may mba mbb mbi mbm mbs mbt mi- mia mib mii mim mis mit miy mma mmb mmi mmm mms mmt msa msb msi msm mss mst msy mta mtb mti mtm mts mtt my- mya myb mym mys myt saa sab sai sam sas sat say sba sbb sbi sbm sbs sbt sby sia sib sii sim sis sit sma smb smi smm sms smt smy ss- ssa ssb ssi ssm sss sst sta stb sti stm sts stt sty sy- sya syb syi sym sys syt taa tab tai tam tas tat tay tba tbb tbi tbm tbs tbt tia tib tii tim tis tit tiy tma tmb tmi tmm tms tmt tmy tsa tsb tsi tsm tss tst tsy tta ttb tti ttm tts ttt tty tya tym tys tyt yaa yab yai yam yas yat yay ybi ybm ybs yby yii yim yis yit yma ymi ymm yms ymt ysa ysb ysi ysm yss yst ysy yta ytm yts ytt yyb yys yyt yyy