#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) cin >> a[i];
    if (a[0] + a[1] <= a.back()) {
      cout << 0 << " " << 1 << " " << a.size() - 1 << endl;
    } else
      cout << "-1" << endl;
  }
}
