from math import sqrt
def ty(a,n):
  w = []
  for i in range(n):
    if a[i] > a[0] + a[1]:
      return(a[0], a[1], a[i])
  return(-1)

t = int(input())
for _ in range(t):
  n = int(input())
  a = list(map(int, input().split()))
  print(ty(a ,n))