#include

int main() {

char alphabet[27]; 

for (int i = 0; i<26; i++) {

alphabet[i] = i + 97; 

}

alphabet[26] = 0; 

printf("%s\n", alphabet); 

for (int i = 0; i<26; i++) {

alphabet[i] = i + 65; 

}

printf("%s", alphabet); 

}