a-a a-c aaa aac aag aar aau ac- aca acc acg acr acu ag- aga agc agg agr agu ar- ara arc arg arr aru au- aua auc aug aur c-- caa cac cag car cau cca ccc ccg ccr ccu cga cgc cgg cgr cgu cra crc crg crr cru cua cuc cug cur cuu gaa gac gag gar gau gca gcc gcg gcr gcu gga ggc ggg ggr ggu gra grc grg grr gru gu- gua guc gug gur guu ra- raa rac rag rar rau rca rcc rcg rcr rcu rga rgc rgg rgr rra rrc rrg rrr rru rua ruc rug rur ruu ua- uaa uac uag uar uau uca ucc ucg ucr ucu uga ugc ugg ugr ugu ur- ura urc urg urr uru uua uuc uug uur uuu