n = int(input())
a = []
for i in range(n):
	s = input()
	a.append(list(map(int, input().split())))

print(a)
b = []
for i in range(len(a)):
	a[i].sort()
for i in range(n):
	if (a[i][-1] - (a[i][0] + a[i][1])) > 0:
		b.append([len(a[i]) + 1, 1, 2])
	else:
		b.append([-1])

for i in range(len(b)):
	b[i].sort()
	for j in b[i]:
		print(j, end=" ")
	print()