a-a a-c aaa aac aae aag aam ac- aca acc ace acg acm aea aec aee aeg aem ag- aga agc age agg agm ama amc ame amg amm c-- caa cac cae cag cam cca ccc cce ccg ccm ce- cea cec cee ceg cem cga cgc cge cgg cgm cma cmc cme cmg cmm eaa eac eae eag eam ec- eca ecc ece ecg ecm eea eec eee eeg eem ega egc ege egg egm em- ema emc eme emg emm gaa gac gae gag gam gca gcc gce gcg gcm ge- gea gec gee geg gem gga ggc ggg ggm gma gmc gme gmg gmm maa mac mae mag mam mc- mca mcc mce mcg mcm mea mec mee meg mem mga mgc mge mgm mma mmc mme mmg mmm