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

int main() {
    while (true) {
        int n, m;
        cin >> n >> m;
        if (n == 0 && m == 0) break;
        string longString;
        for (int i = 0; i < n; ++i) {
            string word;
            cin >> word;
            longString += word;
        }
        vector<int> indices(m);
        for (int i = 0; i < m; ++i) {
            cin >> indices[i];
        }
        string result;
        for (int index : indices) {
            result += longString[index - 1];
        }

        cout << result << endl;
    }

    return 0;
}

E01