#include <iostream>
using namespace std;

int main() {
    int n;
    string a;
    char a1, a2, b1 ,b2;
    cin >> n >> a1 >> a2 >> b1 >> b2;
    cin >>a;
    for(char c :a){
        if(c == a1){
            c = a2;
        }
        if(c == b1){
            c = b2;
        }
        cout << c;
    }
    
}
// 64 位输出请用 printf("%lld")