#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n-i;j++) cout<<" ";
		for(int j=1;j<=2*i-1+n-1;j++)
		{
			if(i==1||j==1||j==2*i-1+n-1)
			{
				cout<<"*";
			} else{
				cout<<" ";
			}
		}
		cout<<endl;
	}
	for(int i=2;i<=n;i++)
	{
		for(int j=1;j<=i-1;j++) cout<<" ";
		for(int j=1;j<=2*(n-i)+1+n-1;j++)
		{
			if(i==n||j==1||j==2*(n-i)+1+n-1)
			{
				cout<<"*";
			} else{
				cout<<" ";
			}
		}
		cout<<endl;
	}
	return 0;
}

/**************************************************************
	Problem: 1011
	User: lzc
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/