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

#include<atcoder/modint>
using namespace atcoder;
using mint = modint998244353;

void solve() {
    char C;
    cin>>C;
    cout<<"? "<<C<<C<<endl;
    string S;
    while(1){
        cin>>S;
        if(S[0]=='!')return;
        reverse(S.begin(),S.end());
        cout<<"? "<<S<<endl;
    }
}

int main() {

    // ios::sync_with_stdio(false);
    // cin.tie(nullptr);


    // ll T;
    // cin>>T;
    // while(T--)
    solve();
}