https://www.acmicpc.net/problem/10994
n=int(input())
for i in range(n,0,-1):
for j in range(n-i): print("* ",end='')
for j in range(4*i-3): print("*",end='')
for j in range(n-i,0,-1): print(" *",end='')
print()
if i != 1:
for j in range(n-i): print("* ",end='')
print("*",end='')
for j in range(4*i-5): print(" ",end='')
print("*",end='')
for j in range(n-i,0,-1): print(" *",end='')
print()
for i in range(2,n+1):
for j in range(n-i): print("* ",end='')
print("*",end='')
for j in range(4*i-5): print(" ",end='')
print("*",end='')
for j in range(n-i,0,-1): print(" *",end='')
print()
for j in range(n-i): print("* ",end='')
for j in range(4*i-3): print("*",end='')
for j in range(n-i,0,-1): print(" *",end='')
print()