#include<iostream>
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;j++)
				cout<<"*";
		
	
		for(int j=1;j<=n-i;j++)
			cout<<" ";
		
	
		for(int j=1;j<=n-i;j++)
			cout<<" ";
		
		
		for(int j=1;j<=2*i-1;j++)
				cout<<"*";
		
	
		for(int j=1;j<=n-i;j++)
			cout<<" ";
		
	
		for(int j=1;j<=n-i;j++)
			cout<<" ";
		
	
		for(int j=1;j<=2*i-1;j++)
				cout<<"*";
		
		cout<<endl;
	}
}

/**************************************************************
	Problem: 1006
	User: admin
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/