#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+1)+1;j++) {
            if(i!=1) {
                if(j==1||j==2*(i+1)+1) cout<<"*";
                else cout<<" ";
            }
            else cout<<"*"; 
             
        }
        cout<<endl;
    }
for(i=n-1;i>=1;i--)
{   
    for(j=1;j<=n-i; j++) cout<<" ";
    for(j=1;j<=2*(i+1)+1;j++) {
            if(i!=1) {
            if(j==1||j==2*(i+1)+1) cout<<"*";
            else cout<<" "; 
        }
        else cout<<"*";
         
    }
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1011
	User: fhjdghj
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/