#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,j;
	cin>>n;
	for(i=1;i<=n;i++) 
	{
		for(j=1;j<=n-i; j++) cout<<" ";
		for(j=1;j<=2*(i+1)+1;j++) {
			if(i!=1) {
				if(j==1||j==2*(i+1)+1) cout<<"*";
				else cout<<" ";
			}
			else cout<<"*"; 
			
		}
		cout<<endl;
	}
for(i=n-1;i>=1;i--)
{	
	for(j=1;j<=n-i; j++) cout<<" ";
	for(j=1;j<=2*(i+1)+1;j++) {
			if(i!=1) {
			if(j==1||j==2*(i+1)+1) cout<<"*";
			else cout<<" "; 
		}
		else cout<<"*";
		
	}
		cout<<endl;
	}
}
	

	

/**************************************************************
	Problem: 1011
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/