a-a a-t aaa aam aas aat aay ama amm ams amt amy as- asa asm ass ast asy at- ata atm ats att ay- aya ays ayt maa mam mas mat may mma mmm mms mmt msa msm mss mst msy mta mtm mts mtt my- mya mym mys myt saa sam sas sat say sma smm sms smt smy ss- ssa ssm sss sst sta stm sts stt sty sy- sya sym sys syt taa tam tas tat tay tma tmm tms tmt tmy tsa tsm tss tst tsy tta ttm tts ttt tty tya tym tys tyt yaa yam yas yat yay yma ymm yms ymt ysa ysm yss yst ysy yta ytm yts ytt yys yyt yyy