import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Collections;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABadTriangle solver = new ABadTriangle();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABadTriangle {
        public void solve(int testNumber, Scanner sc, PrintWriter pw) {
            int t = sc.nextInt();
            while (t-- > 0) {
                int n = sc.nextInt();
                pair[] arr = new pair[n];
                for (int i = 0; i < n; i++) {
                    arr[i] = new pair(sc.nextInt(), i + 1);
                }
                Arrays.sort(arr);
                ArrayList<Integer> ans = new ArrayList<>();
                if (arr[0].a + arr[1].a < arr[n - 1].a) {
                    ans.add(arr[0].b);
                    ans.add(arr[1].b);
                    ans.add(arr[n - 1].b);
                    Collections.sort(ans);
                    for (int x : ans) pw.print(x + " ");
                    pw.println();
                } else {
                    pw.println(-1);
                }

            }
        }

        public class pair implements Comparable<pair> {
            int a;
            int b;

            public pair(int a, int b) {
                this.a = a;
                this.b = b;
            }

            public int compareTo(pair pair) {
                return a - pair.a;
            }

        }

    }

    static class Scanner {
        StringTokenizer st;
        BufferedReader br;

        public Scanner(FileReader r) {
            br = new BufferedReader(r);
        }

        public Scanner(InputStream s) {
            br = new BufferedReader(new InputStreamReader(s));
        }

        public String next() {
            while (st == null || !st.hasMoreTokens()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return st.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }

    }
}

