#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    int arr[n];
    for (int i = 0; i < n; i++) {
      cin >> arr[i];
    }
    bool ans = false;
    for (int i = 0; i < n - 2; i++) {
      for (int j = i + 1; j < n - 1; j++) {
        for (int k = j + 1; k < n; k++) {
          if (arr[i] + arr[j] < arr[k]) {
            ans = true;
            cout << i << " " << j << " " << k << "\n";
            break;
          }
        }
        if (ans) break;
      }
      if (ans) break;
    }
    if (!ans) cout << "-1\n";
  }
  return 0;
}
