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n = int(input())

stars = 2
spaces = 2 * n - 2

for row in range(n):
    print(' ' * spaces + '*' * stars)
    spaces -= 2
    stars += 2

spaces = 2
stars = 2 * n - 2

for row in range(2):
    print('*' * stars + ' ' * spaces)
    spaces += 2
    stars -= 2

spaces = 2
stars = 2 * n - 2

for row in range(2):
    print('*' * stars + ' ' * spaces)
    if spaces > 0 and stars > 0:
        spaces -= 2
        stars += 2

spaces = 2
stars = 2 * n - 2

for row in range(2):
    print(' ' * spaces + '*' * stars)
    spaces += 2
    stars -= 2

spaces = 2
stars = 2 * n - 2

for row in range(2):
    print(' ' * spaces + '*' * stars)
    if spaces > 0 and stars > 0:
        spaces -= 2
        stars += 2

spaces = 2
stars = 2 * n - 2

for row in range(n):
    print('*' * stars + ' ' * spaces)
    spaces += 2
    stars -= 2