/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
 public class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc = new Scanner(System.in);
		int t= sc.nextInt();
		
		for(int i=0;i<t;i++) {
		    int n=sc.nextInt();
		    int a[] = new int[n];
    		for(int j=0;j<n;j++) {
    		    a[j]=sc.nextInt();
    		}
		    if(n<3) {
		        System.out.println("-1");
		    }
		    else {
    		    
    		    Arrays.sort(a);
    		    int m,flag=0;
    		    for(m=0;m<n-2;m++) {
    		        if(a[m]+a[m+1]<=a[m+2]) {
    		            flag++;
    		            break;
    		        }
    		    }
    		    if(flag>0) {
    		        System.out.println((m+1) + " " + (m+2) + " " + (m+3));
    		    }
    		    else {
    		        System.out.println("-1");
    		    }
		    }	    
		}
	}
}
