#include <string>
#include <iostream>
#include <algorithm>
using namespace std;

void getResult(string curString, string changeSymbols, string toSymbols) {
    int i = 0;
    string tempString = "";
    string resultString = "";
    while (i < curString.length()) {
        for (int j = 0; j < changeSymbols.length(); j++) {
            tempString += curString[i + j];
        }
        if (tempString == changeSymbols) {
            resultString += toSymbols;
            i += changeSymbols.length();
        } else {
            resultString += curString[i];
            i++;
        }
        tempString = "";
    }
    cout << resultString << endl;
}

int main() {

    string curString;
    string changeSymbols;
    string toSymbols;

    cin >> curString >> changeSymbols >> toSymbols;

    getResult(curString, changeSymbols, toSymbols);

    return 0;
}