F1

#include <iostream>
#include <fstream>

using namespace std;

int main() {
    ifstream fin("input.txt");
    ofstream fout("output.txt");

    char hidden[16];
    for (int i = 0; i < 15; ++i)
        hidden[i] = 0;
    fin >> hidden;

    int len = 0;
    for (int i = 0; i < 15; ++i) {
        if (hidden[i] != 0)
            ++len;
    }


    char guess[21];
    for (int i = 0; i < 20; ++i)
        guess[i] = 0;
    fin >> guess;

    char result[16];
    for (int i = 0; i < 15; ++i)
        result[i] = '.';

    for (int i = 0; i < 20; ++i) {
        for (int j = 0; j < 15; ++j) {
            if (guess[i] != 0 && guess[i] == hidden[j]) {
                result[j] = result[j] == '.' ? hidden[j] : '.';
            }
        }
    }


    for (int i = 0; i < len; ++i)
        fout << result[i];

    fin.close();
    fout.close();

    return 0;
}