a-a a-c aaa aac aag aak aar ac- aca acc acg ack acr ag- aga agc agg agk agr aka akc akg akk akr ar- ara arc arg ark arr c-- caa cac cag cak car cca ccc ccg cck ccr cga cgc cgg cgr cka ckc cra crc crg crk crr gaa gac gag gak gar gca gcc gcg gck gcr gga ggc ggg ggr gka gra grc grg grk grr ka- kaa kac kag kak kar kca kcc kcg kck kcr kga kgc kkc kkk kkr kra krc krg krk krr ra- raa rac rag rak rar rca rcc rcg rcr rga rgc rgg rgk rgr rkc rkg rkk rra rrc rrg rrk rrr