#include <stdio.h>
#include <string.h>

#define t 1000
int main(){
        char word1 = 'a', word2 = 'a', word3 = 'a', word4 = 'a';
        FILE *file = fopen("pass", "w");
        while (word1 != 'z'){
                printf("%c%c%c%c\n", word1, word2, word3, word4);
                if (word4 == 'z'){
                        word3++;
                        word4 = 'a';
                }
                else if (word3 == 'z'){
                        word2++;
                        word3 = 'a';
                }

                else if (word2 == 'z'){
                        word1++;
                        word2 = 'a';
                }
                word4++;
                char *hi = "%c%c%c%c", word1, word2, word3, word4;
                fputs(hi, file);

        }
        fclose(file);
}
~