import  java.util.Scanner;

public class Main {
    public static void main(String[] args) {
         Scanner scan = new Scanner(System.in);
         int testCases = scan.nextInt();
         boolean found = false;

         while(testCases-- > 0){

             int aLength = scan.nextInt();
             int[] a = new int[aLength];
             found = false;

             for(int i=0; i<aLength ; i++){
                 a[i] = scan.nextInt();
             }

             for(int i=0; i<aLength - 2; i++){
                 for(int j=i+1; j<aLength -1 ;j++){
                     for(int k= j+1 ; k<aLength; k++){

                         if(a[i] + a[j] < a[k] ||
                            a[i] + a[k] < a[j] ||
                            a[j] + a[k] < a[i]){
                             found = true;
                             System.out.println(i+" "+j+" "+k);
                             break;
                         }
                     }

                     if(found){
                         break;
                     }
                 }

                      if(found){
                          break;
                      }
             }

             if(!found) {
                 System.out.println(-1);
             }

         }
    }
}
