import sys

n = int(sys.stdin.buffer.readline())
if n <= 2:
    print(-1)
    raise SystemExit
if n == 3:
    grid = ["AAAAAA", "ABBBAA", "ABBBBA", "ABBBBA", "ABBBBA", "ABBBAA"]
elif n == 4:
    grid = ["AAAAAAAA", "AAAAAAAA", "ABBBBAAA", "ABBBBBBA", "ABBBBBBA", "ABBBBBBA", "ABBBBBBA", "ABBBBAAA"]
else:
    size, square = 2 * n, 2 * n - 3
    grid = [["A"] * size for _ in range(size)]
    grid[0][0] = grid[0][1] = grid[1][0] = "B"
    for r in range(1, square + 1):
        grid[r][1:square + 1] = ["B"] * square
    remove, r = square * square + 3 - 2 * n * n, square
    while remove:
        take = min(square - 1, remove)
        grid[r][square - take + 1:square + 1] = ["A"] * take
        remove, r = remove - take, r - 1
    grid = ["".join(row) for row in grid]
print("\n".join(grid))