a-a a-c aaa aac aag aao aar aau ac- aca acc acg aco acr acu ag- aga agc agg ago agr agu aoa aoc aog aoo aor aou ar- ara arc arg aro arr aru au- aua auc aug auo aur c-- caa cac cag cao car cau cca ccc ccg cco ccr ccu cga cgc cgg cgo cgr cgu co- coa coc cog coo cor cou cra crc crg cro crr cru cua cuc cug cuo cur cuu gaa gac gag gao gar gau gca gcc gcg gco gcr gcu gga ggc ggg ggo ggr ggu goa goc gog goo gor gou gra grc grg gro grr gru gu- gua guc gug guo gur guu oaa oac oag oao oar oau oc- oca occ ocg oco ocr ocu oga ogc ogg ogo oo- ooa ooc oog ooo oor or- ora orc org oro orr oru ou- oua ouc ouo our ra- raa rac rag rao rar rau rca rcc rcg rco rcr rcu rga rgc rgg rgo rgr roa roc rog roo ror rou rra rrc rrg rrr rru rua ruc rug ruo rur ruu ua- uaa uac uag uao uar uau uca ucc ucg uco ucr ucu uga ugc ugg ugo ugr ugu uoa uoc uog uoo uor ur- ura urc urg uro urr uru uua uuc uug uur uuu