t = int(input())
for _ in range(t):
	n = int(input())
	r = list(map(int, input().split()))
	c = list(map(int, input().split()))
	if n == 2:
		print(-1)
		continue
	if c.count(c[0]) == n:
		print(-1)
		continue
	ans = [[r[i]]*n for i in range(n)]
	for i in range(n):
		ans[i][i] = c[i]

	for i in ans:
		print(*i)