N = list(map(int, input().split()))

parts = []

for count in range(N[0]):
    part = list((map(int, input().split())))
    del part[0]
    part = list(set(part))
    part.sort(reverse=True)
    sort_part = part
    parts.append(part)

for list_part in parts:
    x = ' '.join(map(str, list_part))
    print(x)