n = int(input())
for i in range(n):print(" " * (n - i - 1) + "*" * (2 * i + 1) + " " * (n - i - 1))
for i in range(n - 1):print(" " * (i + 1) + "*" * (2 * (n - i - 1) - 1) + " " * (i + 1))