a-a a-c aaa aac aae aag aak aam aao ac- aca acc ace acg ack acm aco aea aec aee aeg aek aem aeo ag- aga agc age agg agk agm ago aka akc ake akg akk akm ako ama amc ame amg amk amm amo aoa aoc aoe aog aok aom aoo c-- caa cac cae cag cak cam cao cca ccc cce ccg cck ccm cco ce- cea cec cee ceg cek cem ceo cga cgc cge cgg cgm cgo cka ckc ckm cko cma cmc cme cmg cmk cmm cmo co- coa coc coe cog cok com coo eaa eac eae eag eak eam eao ec- eca ecc ece ecg eck ecm eco eea eec eee eeg eek eem eeo ega egc ege egg egm ego eka ekc eke ekg eko em- ema emc eme emg emk emm emo eo- eoa eoc eoe eog eok eom eoo gaa gac gae gag gak gam gao gca gcc gce gcg gck gcm gco ge- gea gec gee geg gek gem geo gga ggc ggg ggm ggo gka gkm gko gma gmc gme gmg gmm gmo goa goc goe gog gok gom goo ka- kaa kac kae kag kak kam kao kca kcc kce kcg kck kcm ke- kea kec kee keg kek kem keo kga kgc kgm kgo kkc kke kkk kkm kma kmc kme kmg kmk kmm kmo koa koc koe kog kok kom koo m-o maa mac mae mag mak mam mao mc- mca mcc mce mcg mck mcm mco mea mec mee meg mek mem meo mga mgc mge mgk mgm mgo mka mkc mke mkg mkk mkm mko mma mmc mme mmg mmk mmm mmo moa moc moe mog mok mom moo oaa oac oae oag oak oam oao oc- oca occ ocg ock ocm oco oea oec oee oeg oem oeo oga ogc oge ogg ogo oka okc oke okg okk oko om- oma omc ome omg omm omo oo- ooa ooc oog ook oom ooo