#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+n-2;j++)
		{
		if(j==1||i==1||j==2*i+n-2) cout<<"*";
		else cout<<" ";
		
		}
	cout<<endl;}
		for(i=2;i<=n;i++)
	{
		for(j=1;j<=i-1;j++) cout<<" ";
		for(j=1;j<=3*n-2*i;j++)
		{
		if(j==1||i==n||j==3*n-2*i) cout<<"*";
		else cout<<" ";
		
		}
	cout<<endl;}
	return 0;
	}

/**************************************************************
	Problem: 1011
	User: ljl2
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/