from sys import stdin
input = lambda : stdin.readline().strip()
for _ in range(int(input())):
    n = int(input())
    a = list(map(int,input().split()))
    r = range(n)
    b = [(i,j,k) for i in r for j in r for k in r if i<j and j<k and a[i]+a[j]<=a[k]]
    if(len(b)==0):
        print(-1)
    else:
        print(*b[0])
