#include <bits/stdc++.h>
using namespace std;

using i64 = long long;

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);

#ifdef LOCAL
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
#endif

    auto solve = [&]() {
        auto ask = [&](string s = "abcdefghijklmnopqrstuvwxyz") {
            cout << "? " << s << endl;
            int n;
            cin >> n;
            vector<int> v(n);
            for (auto &i : v) {
                cin >> i;
                i--;
            }
            return pair(n, v);
        };

        int n = ask().first;

        vector f(5, vector<int>(n));

        for (int i = 0; i < 5; i++) {
            string s;
            for (int j = 1; j <= 26; j++) {
                if (j >> i & 1) {
                    s += j - 1 + 'a';
                }
            }
            auto v = ask(s).second;
            for (auto p : v) {
                for (int j = 1; j <= 26; j++) {
                    if (j >> i & 1) {
                        f[i][p] = 1;
                    }
                }
            }
        }

        string ans;

        for (int i = 0; i < n; i++) {
            int mask = 0;
            for (int j = 0; j < 5; j++) {
                mask |= f[j][i] << j;
            }
            ans += char(mask - 1 + 'a');
        }

        cout << "! " << ans << endl;

        string res;
        cin >> res;

        assert(res == "correct");
    };
    
    solve();
    
    return 0;
}