Q4

for i in range(int(input())):
    n=int(input())
    arr=[int(x) for x in input().split()]
    s = list()

    arr1 = [0 for i in range(n)]

    for i in range(n - 1, -1, -1):
        while (len(s) > 0 and s[-1] <= arr[i]):
            s.pop()

        if (len(s) == 0):
            arr1[i] = -1
        else:
            arr1[i] = s[-1]

        s.append(arr[i])

    for i in range(n):
        print(arr1[i],end=' ')
    print()