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

/**************************************************************
	Problem: 1071
	User: zzz
	Language: C++
	Result: Wrong Answer
****************************************************************/