n = int(input())
k = 2 * n - 2
for i in range(0, n):
    for j in range(0 , k):
        print(end=" ")
    k = k - 1
    for j in range(0 , i + 1 ):
        print("* ", end="")
    print("\r")
for i in range(0, n):
    for j in range(0 , k):
        print(end=" ")
    for j in range(0 , n):
        print(" *", end="")
    print("\r")
