a-a a-c aaa aac aag aao aar ac- aca acc acg aco acr ag- aga agc agg ago agr aoa aoc aog aoo aor ar- ara arc arg aro arr c-- caa cac cag cao car cca ccc ccg cco ccr cga cgc cgg cgo cgr co- coa coc cog coo cor cra crc crg cro crr gaa gac gag gao gar gca gcc gcg gco gcr gga ggc ggg ggo ggr goa goc gog goo gor gra grc grg gro grr oaa oac oag oao oar oc- oca occ ocg oco ocr oga ogc ogg ogo oo- ooa ooc oog ooo oor or- ora orc org oro orr ra- raa rac rag rao rar rca rcc rcg rco rcr rga rgc rgg rgo rgr roa roc rog roo ror rra rrc rrg rrr