a-a a-c aaa aac aae aag aam aao ac- aca acc ace acg acm aco aea aec aee aeg aem aeo ag- aga agc age agg agm ago ama amc ame amg amm amo aoa aoc aoe aog aom aoo c-- caa cac cae cag cam cao cca ccc cce ccg ccm cco ce- cea cec cee ceg cem ceo cga cgc cge cgg cgm cgo cma cmc cme cmg cmm cmo co- coa coc coe cog com coo eaa eac eae eag eam eao ec- eca ecc ece ecg ecm eco eea eec eee eeg eem eeo ega egc ege egg egm ego em- ema emc eme emg emm emo eo- eoa eoc eoe eog eom eoo gaa gac gae gag gam gao gca gcc gce gcg gcm gco ge- gea gec gee geg gem geo gga ggc ggg ggm ggo gma gmc gme gmg gmm gmo goa goc goe gog gom goo m-o maa mac mae mag mam mao mc- mca mcc mce mcg mcm mco mea mec mee meg mem meo mga mgc mge mgm mgo mma mmc mme mmg mmm mmo moa moc moe mog mom moo oaa oac oae oag oam oao oc- oca occ ocg ocm oco oea oec oee oeg oem oeo oga ogc oge ogg ogo om- oma omc ome omg omm omo oo- ooa ooc oog oom ooo