a-a a-c aaa aac aad aag aan aao ac- aca acc acd acg acn aco ad- ada adc add adg adn ado ag- aga agc agd agg agn ago an- ana anc and ang ann ano aoa aoc aod aog aon aoo c-- caa cac cad cag can cao cca ccc ccd ccg ccn cco cda cdc cdd cdg cdn cdo cga cgc cgd cgg cgn cgo cn- cna cnc cnd cng cnn cno co- coa coc cod cog con coo daa dac dad dag dan dao dca dcc dcd dcg dcn dco dda ddc ddd ddg ddn ddo dga dgc dgd dgg dgn dna dnc dnd dng dnn dno doa doc dod dog don doo g-d gaa gac gad gag gan gao gca gcc gcd gcg gcn gco gda gdc gdd gdn gdo gga ggc ggd ggg ggn ggo gna gnc gnd gnn gno goa goc god gog gon goo naa nac nad nag nan nao nca ncc ncd ncg ncn nco nda ndc ndd ndg ndn ndo nga ngc ngd ngg ngn ngo nna nnc nng nnn nno no- noa noc nod nog non noo oaa oac oad oag oan oao oc- oca occ ocd ocg ocn oco oda odc odd odg odn odo oga ogc ogd ogg ogn ogo on- ona onc ond ong onn ono oo- ooa ooc ood oog oon ooo