T = int(input())
for _ in range(T):
  N = int(input())
  R = list(map(int,input().split()))
  C = list(map(int,input().split()))
  if N == 1:
    print(1)
  elif N == 2:
    print(-1)
  else:
    if max(C) == min(C):
      if N <= 4:
        print(-1)
      else:  
        A = [[R[i] for j in range(N)] for i in range(N)]
        for i in range(N):
          A[i][i] = C[0]
        for i in range(N):
          if R[i] == C[0]:
            A[(i+1)%N][i] = C[0]
            break
        for i in A:
          print(*i)
    else:
      A = [[R[i] for j in range(N)] for i in range(N)]
      for k in range(N):
        p = True
        for i in range(N):
          if R[i] == C[(i+k)%N]:
            p = False
        if p:
          x = k
          break
      for i in range(N):
        A[i][i] = C[(i+x)%N]
      for i in A:
        print(*i)