a-a a-c a-z aaa aac aak aan aay aaz ac- aca acc ack acn acy acz aka akc akk akn an- ana anc ank ann any anz ay- aya ayc ayk ayn ayz az- aza azn azy azz c-- caa cac cak can cay caz cca ccc cck ccn ccz cka ckc cky cn- cna cnc cnn cny cya cyc cyk cyn cz- czc czk k-z ka- kaa kac kak kan kay kaz kca kcc kck kcn kkc kkk kkn kky kn- kna knc knk knn kya kyc kyn kyz kzy naa nac nak nan nay naz nca ncc nck ncn nka nkc nkk nkn nky nna nnc nnk nnn nnz nya nyc nyk nyn nyy nzz yaa yac yak yan yay yaz yca ycc ycy yka ykk ykn yna ynk ynn yny yyc yyy yyz yzy zaa zac zak zan zay zaz zka znc znn zzy zzz