#include <bits/stdc++.h>
#define rep(i, n) for(long long i = 0; i < n; i++)
#define ALL(v) (v).begin(), (v).end()
#define rALL(v) (v).rbegin(), (v).rend()
using namespace std;

using lint = long long;
using ld = long double;

int main() {
    char c;
    cin >> c;
    cout << "? " << c << c << endl;
    while (true) {
        string s, t;
        cin >> s >> t;
        if (s == "!") {
            return 0;
        }
        reverse(ALL(t));
        cout << "? " << t << endl;
    }
}