#include<iostream>
#include<bits/stdc++.h>
using namespace std;
int main()
{
	char a = '*';
	int n;
	cin >> n;
	for(int i = 1 ;i <= 2*n-1 ;i++){
		if(i == 1 || i == 2*n-1){
			for(int j = 1 ;j <= 3*n-2 ;j++){
				if(j < n || j >= 2*n){
					cout << " ";
				}else{
					cout << a;
				}
			}
		}else if(i <= n){
			for(int j = 1 ;j <= 3*n-2 ;j++){
				if(j == n-i+1 ||j == 2*n+i-2){
					cout << a;
				}else{
					cout << " ";
				}
			}
		}else if(i > n){
			for(int j = 1 ;j <= 3*n-2 ;j++){
				if(j == i-n+1 ||j == 4*n-2-i){
					cout << a;
				}else{
					cout << " ";
				}
			}
		}
		cout << endl;
	}
	return 0;
}