def solve():

    N = int(input())

    R = [[0] * N for _ in range(N)]
    B = [[0] * N for _ in range(N)]

    cnt = 0
    for y in range(N):
        for x in range(N):
            if (y + x) % 2 == 0:
                R[y][x] = y
                B[y][x] = x
            else:
                R[y][x] = x
                B[y][x] = y

    for r in R:
        rr = [i + 1 for i in r]
        print(*rr)
    for b in B:
        bb = [i + 1 for i in b]
        print(*bb)


# T = int(input())
T = 1
for _ in range(T):
    solve()