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

int main() {
    int t;
    cin >> t;
    for (int j = 0; j < t; j++) {
        int n;
        cin >> n;
        if ((n * (n + 1) / 2 % 2) == 1) cout << -1 << endl;
        else {
            int x = (n + 1) * n / 4;
            vector<int> res(n + 1, 0);
            for (int i = n; i >= 1; i--) {
                if (x >= i) {
                    res[i]++;
                    x -= i;
                }
            }
            for (int i = 1; i <= n; i++) {
                cout << res[i];
                if (i == n) cout << endl;
            }
        }
    }
}