#include <stdio.h>
#include <stdlib.h>
 
int main(void)
{
    const char *in = "HeAlOa wArLa!";
    char out[14] = {0};
    int i, j, r;
    for (i = 0; i < 10; i++) {
        for (j = 0; j < 14; j++) {
            if (in[j] == 'A' || in[j] == 'a') {
                r = random() % 26;
                out[j] = in[j] + (char)r;
            } else if (i == 0) {
                out[j] = in[j];
            }
        }
        printf("%s\n", out);
    }
}

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