import random
import sys

from typing import List, Tuple

int1 = lambda x: int(x) - 1
input = lambda: sys.stdin.readline().rstrip('\n')
ii = lambda: int(input())
vi = lambda: list(map(int, input().split()))
vi1 = lambda: list(map(int1, input().split()))


def dbg(*args, **kwargs):
    print(*(repr(arg) for arg in args), *(f'{k}: {repr(v)}' for k, v in kwargs.items()),
          sep='; ', file=sys.stderr, flush=True)


def main():
    t = ii()

    def inv(x):
        arr = [None] * len(x)
        for i in range(len(x)):
            arr[x[i] - 1] = i + 1
        return arr

    def p(arr, r, c):
        for i in range(len(r)):
            for j in range(len(c)):
                print(arr[r[i] - 1][c[j] - 1], end=' ')
            print()

    for _ in range(t):
        n = ii()
        r = vi()
        c = vi()
        if n == 1:
            print(1)
            continue
        if n == 2:
            print(-1)
            continue
        if n <= 4:
            arr = [[i] * n for i in range(1, n + 1)]
            for i in range(n):
                arr[i][i] = -1
            if len(set(c)) == 1:
                print(-1)
                continue
            g = list(range(n))
            while True:
                random.shuffle(g)
                for i in range(n):
                    if c[g[i]] == i + 1:
                        break
                else:
                    break

            for i in range(n):
                arr[i][i] = c[g[i]]

            p(arr, r, inv([i + 1 for i in g]))
        else:
            arr = [[i] * n for i in range(1, n + 1)]
            for i in range(n):
                arr[i][i] = arr[i][(i + 1) % n] = -1
            for i in range(n):
                for j in range(n):
                    if arr[i][j] == -1:
                        arr[i][j] = c[j]
            p(arr, r, list(range(1, n + 1)))


def _start():
    if (ret := main()) is not None:
        print(*ret) if isinstance(ret, List) or isinstance(ret, Tuple) else print(ret)


if __name__ == '__main__':
    _start()