#include <bits/stdc++.h>   using namespace std;   const int MXN = 5e4 + 5;   const int INF = 1e9;   const long long P = 29;   const long long MOD = 1e9 + 7;   int t;   int main() {     srand(time(0));     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     cout << fixed << setprecision(10);     cin >> t;     while (t--) {       int n, x1, x2, x3;       cin >> n;       cin >> x1 >> x2;       for (int i = 2; i < n; i++) {         cin >> x3;       }       if (x1 + x2 <= x3)         cout << 1 <<     << 2 <<     << n <<   n ;       else         cout << -1 <<   n ;     }     return 0;   }   