a-a a-c aaa aac aag aak aan aar ac- aca acc acg ack acn acr ag- aga agc agg agk agn agr aka akc akg akk akn akr an- ana anc ang ank ann anr ar- ara arc arg ark arn arr c-- caa cac cag cak can car cca ccc ccg cck ccn ccr cga cgc cgg cgn cgr cka ckc cn- cna cnc cng cnn cnr cra crc crg crk crn crr gaa gac gag gak gan gar gca gcc gcg gck gcn gcr gga ggc ggg ggn ggr gka gkn gna gnc gnn gnr gra grc grg grk grn grr ka- kaa kac kag kak kan kar kca kcc kcg kck kcn kcr kga kgc kkc kkk kkn kkr kn- kna knc kng knk knn knr kra krc krg krk krn krr naa nac nag nak nan nar nca ncc ncg nck ncn ncr nga ngc ngg ngk ngn nka nkc nkk nkn nkr nna nnc nng nnk nnn nra nrc nrg nrk nrn nrr ra- raa rac rag rak ran rar rca rcc rcg rcn rcr rga rgc rgg rgk rgn rgr rkc rkg rkk rna rnc rng rnn rnr rra rrc rrg rrk rrn rrr