import java.awt.Point;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
public class Unitgcd 
{
	public static void main(String[] args) 
	{
		Scanner obj=new Scanner(System.in);
		int t=obj.nextInt();
		while(t-->0)
		{
		int n=obj.nextInt();
		long[] arr=new long[n];
		for(int i=0;i<n;i++)
		{
			arr[i]=obj.nextLong();
		}
		Arrays.sort(arr);
		if(arr[0]+arr[1]>arr[n-1])
		{
			System.out.println("-1");
		}
		else
			System.out.println(0+" "+1+" "+2);
		}
	}
}