#include <stdio.h>

int main() {
    int n;
    char a1, a2, a3, a4;
    scanf("%d %c %c %c %c\n", &n, &a1, &a2, &a3, &a4);
    char c;
    for (int i = 0; i < n; ++i) {
        c = getchar();
        if (c == a1) {
            putchar(a2);
        } else if (c == a3) {
            putchar(a4);
        } else {
            putchar(c);
        }
    }
    return 0;
}