#include <bits/stdc++.h>
using namespace std;
#define int long long
#ifndef GammaRays
#define debug //
#define endl "\n"
#endif
const int N = 3e5 + 10;
const int mod = 998244353;
struct INTER {
    vector<int> query(string s) {
        cout << '?' << ' ' << s << endl;
        int n;
        cin >> n;
        vector<int> a(n);
        for (auto &x : a) {
            cin >> x;
        }
        return a;
    }
    void answer(string s) {
        cout << '!' << ' ' << s << endl;
    }

};
void solve() {
    INTER inter;
    vector<int> a = inter.query("abcdefghijklmnopqrstuvwxyz");
    int n = a.size();
    vector<int> ans(n);
    for (int i = 0; i <= 4; i ++) {
        string q;
        for (int k = 0; k <= 25; k ++) {
            if (k & (1ll << i)) {
                q += ('a' + k);
            }
        }
        auto x = inter.query(q);
        for (auto y : x) {
            ans[y - 1] |= (1ll << i);
        }
    }
    string res;
    for (int i = 0; i < n; i ++) {
        res += ('a' + ans[i]);
    }
    inter.answer(res);
}
signed main() {
    int t = 1;
    // std::cin >> t;
    while (t --) {
        solve();
    }
    return 0;
}