#include <bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	for(int y=1;y<n;y++)cout<<" ";
	for(int y=1;y<=n;y++)cout<<"*";
	cout<<"\n";
	for(int y=1;y<n-1;y++){
		for(int u=1;u<n-y;u++)cout<<" ";
		cout<<"*";
		for(int u=1;u<y;u++)cout<<" ";
		for(int u=1;u<=n;u++)cout<<" ";
		for(int u=1;u<y;u++)cout<<" ";
		cout<<"*\n";
	}
	cout<<"*";
	for(int y=0;y<(n-2)*2+n;y++)cout<<" ";
	cout<<"*\n";
	
	for(int y=n-1;y>0;y--){
		for(int u=1;u<n-y;u++)cout<<" ";
		cout<<"*";
		for(int u=1;u<y;u++)cout<<" ";
		for(int u=1;u<=n;u++)cout<<" ";
		for(int u=1;u<y;u++)cout<<" ";
		cout<<"*\n";
	}
	for(int y=1;y<n;y++)cout<<" ";
	for(int y=1;y<=n;y++)cout<<"*";
	return 0;
}

/**************************************************************
	Problem: 1011
	User: zhouhongyi
	Language: C++
	Result: Wrong Answer
****************************************************************/