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

string s;

void solve()
{
    cin >> s;
    string ans;
    int p = 0;
    while (p < s.size() && s[p] == ')') ans += s[p++];
    int cur = 0;
    while (p < s.size())
    {
        if (s[p] == '(') cur++;
        else cur--;
        ans += s[p++];
        cur = max(cur, 0);
    }
    if (cur > 0)
    {
        cout << "impossible\n";
        return;
    }
    cout << ans << '\n';
    return;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int T = 1;
    cin >> T;
    while (T--) solve();
    return 0;
}