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