



import java.util.*;
import java.io.*;
import java.lang.*;
  
public class test {

     public static void main(String args[]) { 
		  
                  try{
		  Scanner sc= new Scanner(System.in);
		  
		  int t = sc.nextInt();
		  
		  while(t-->0) { 
			  boolean check = true;
			 int n = sc.nextInt();
			 
			 long a[] = new long[n];
			 
			 for(int i=0;i<n;i++) { 
				 a[i] = sc.nextLong();
			 }
			 
			for(int i=0;i<n;i++) { 
				if(check==false) { 
					break;
				}
				for(int j=i+1;j<n;j++) { 
					if(check==false) { 
						break;
					}
					for(int k = j+1;k<n;k++) { 
						if( (a[i]+a[j]>a[k]) && (a[i] +a[k] > a[j]) && (a[j]+a[k])>a[i]) { 
							continue;
						}
						else { 
							System.out.println(i+" "+j+" "+k);
							check = false;
							break;
						}
					}
				}
			}
			
			if(check==true) { 
				System.out.println(-1);
			}
			}
		  }
                 catch( Exception e){ return;}
	      
	  }
	}
	 
	
