a-a a-c a-t aaa aac aam aat aay ac- aca acc acm act acy ama amc amm amt amy at- ata atc atm att ay- aya ayc ayt c-- caa cac cam cat cay cca ccc ccm cct cma cmc cmm cmt cmy cta ctc ctm ctt cty cya cyc cym cyt maa mac mam mat may mc- mca mcc mcm mct mma mmc mmm mmt mta mtc mtm mtt my- mya myc mym myt taa tac tam tat tay tca tcc tcm tct tma tmc tmm tmt tmy tta ttc ttm ttt tty tya tyc tym tyt yaa yac yam yat yay yca ycc ycy yma ymc ymm ymt yta ytc ytm ytt yyc yyt yyy