
import java.util.*;
public class Try2 {	
	public static void main(String[] agrs) {
		Scanner myobj = new Scanner(System.in);
		int t = myobj.nextInt();
		while(t-->0) {
			int n = myobj.nextInt();
			int[] a = new int[n];
			for(int i  = 0;i<n;i++) {
				a[i] = myobj.nextInt();
			
				
			}
			boolean b = 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(a[i] + a[j] <= a[k]) {
					System.out.println((i+1)+ " " + (j+1) + " " + (k+1) );
					b=true;
					break;
				}				}}
			}
			
			
			
			if(!b) {
				System.out.println("-1");
			}
			
		}		
		
		myobj.close();
	}

}
