N = int(input())
if N <= 2:
	print(-1)
elif N == 3:
    print("AAAAAA")
    print("ABBBAA")
    print("ABBBBA")
    print("ABBBBA")
    print("ABBBBA")
    print("ABBBAA")
else:
	for i in range(N * 2):
		for j in range(N * 2):
			if i == 0 or i == N * 2 - 1 or j == 0 or j == N * 2 - 1:
				print("A", end = "\n" if j == N * 2 - 1 else "")
			elif i == 1 or j == 1:
				print("A" if i == 3 or i == 5 or j == 3 or j == 5 else "B", end = "")
			elif i == 2 or j == 2:
				print("B", end = "")
			else:
				print("B" if (i - 3) * (N * 2 - 4) + j - 3 < 2 * N * N - 8 * N + 16 else "A", end = "")