a-a a-c a-z aaa aac aag aan aar aau aay aaz ac- aca acc acg acn acr acu acy acz ag- aga agc agg agn agr agu agy agz an- ana anc ang ann anr anu any anz ar- ara arc arg arn arr aru ary arz au- aua auc aug aun aur auz ay- aya ayc ayn ayr ayu ayz az- aza azg azn azu azy azz c-- caa cac cag can car cau cay caz cca ccc ccg ccn ccr ccu ccz cga cgc cgg cgn cgr cgu cgy cn- cna cnc cng cnn cnr cnu cny cra crc crg crn crr cru cry crz cua cuc cug cun cur cuu cuy cuz cya cyc cyg cyn cyr cz- czc gaa gac gag gan gar gau gay gaz gca gcc gcg gcn gcr gcu gga ggc ggg ggn ggr ggu ggz gna gnc gnn gnr gnu gra grc grg grn grr gru gry gu- gua guc gug gun gur guu guy guz gy- gya gyn gyr gza gzr gzu naa nac nag nan nar nau nay naz nca ncc ncg ncn ncr ncu nga ngc ngg ngn ngu nna nnc nng nnn nnu nnz nra nrc nrg nrn nrr nru nry nrz nua nuc nug nun nur nuu nuy nya nyc nyg nyn nyu nyy nzg nzz ra- raa rac rag ran rar rau ray raz rca rcc rcg rcn rcr rcu rga rgc rgg rgn rgr rna rnc rng rnn rnr rnu rny rnz rra rrc rrg rrn rrr rru rua ruc rug run rur ruu ruy ruz ry- rya ryc ryg ryn ryr ryu ryy ryz rza rzy ua- uaa uac uag uan uar uau uay uaz uca ucc ucg ucn ucr ucu uga ugc ugg ugn ugr ugu un- una unc ung unn unr unu uny ur- ura urc urg urn urr uru ury urz uua uuc uug uun uur uuu uyc uyu uza uzu yaa yac yag yan yar yau yay yaz yca ycc ycu ycy yga ygc yna yng ynn ynu yny yra yrc yrg yrn yru yua yug yun yur yuu yuy yyc yyg yyu yyy yyz yzr yzu yzy z-g zaa zac zag zan zar zay zaz zgg znc znn zuc zug zun zur zuz zzr zzy zzz