T = int(input())
for t in range(T):
    n = int(input())
    r = list(map(int, input().split()))
    c = list(map(int, input().split()))
    sr = []
    sc = []
    for i in range(n):
        sr.append((r[i], i))
        sc.append((c[i], i))
    sr.sort()
    sc.sort()
    if n == 1:
        print(1)
        continue
    if n == 2:
        print(-1)
        continue
    if sc[0][0] == sc[-1][0]:
        if n <= 4:
            print(-1)
            continue
        ans = [[r[_]] * n for _ in range(n)]
        if r[0] != c[0]:
            ans[0][0] = c[0]
            j = 0
        else:
            ans[1][0] = c[0]
            j = 1
        for i in range(1, n):
            if r[j] == c[0]:
                j += 1
            ans[j][i] = c[0]
            j += 1
        for i in ans:
            print(*i)
        continue
    sans = [[0] * n for _ in range(n)]
    for j in range(n):
        for i in range(n):
            if i < n - 1:
                sans[(i + j) % n][j] = (i + j) % n + 1
            else:
                sans[(i + j) % n][j] = sc[j][0]
    ans = [[0] * n for _ in range(n)]
    for i in range(n):
        for j in range(n):
            ans[sr[i][1]][sc[j][1]] = sans[i][j]
    for i in ans:
        print(*i)