a=int(input())
l=a
n=1
for i in range(1,a+1):
for k in range(l-1):
print(" ",end="")
for j in range(i):
print("*",end="")
print(" ",end='')
for g in range(n,i+n):
print(g,end="")
g+=1
n+=1
l-=1
print()
l=a
n=1
z=1
for i in range(1,a+1):
for jj in range(i-1):
print(" ",end="")
for k in range(a,i-1,-1):
print(k,end="")
print(" ",end="")
for g in range(a,i-1,-1):
print(n,end="")
n+=2
n=z+2
z+=2
l-=1
print()
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