#include <bits/stdc++.h>
using namespace std;
int main() {
  int T;
  cin >> T;
  for (int i = 0; i < T; i++) {
    int n;
    cin >> n;
    vector<int> array;
    int a;
    for (int j = 0; j < n; j++) {
      cin >> a;
      array.push_back(a);
    }
    bool kate = false;
    for (int j = 0; j < n; j++) {
      for (int k = j + 1; k < n; k++) {
        for (int l = k + 1; l < n; l++) {
          if (array[j] + array[k] < array[l] ||
              array[j] + array[l] < array[k] ||
              array[l] + array[k] < array[j]) {
            cout << j + 1 << " " << k + 1 << " " << l + 1 << endl;
            kate = true;
            break;
          }
        }
      }
    }
    if (!kate) {
      cout << -1 << endl;
    }
  }
}
