#include<bits/stdc++.h>
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+3;j++) {
            if(i==1||j==1||j==2*i+3) cout<<"*";
            else  cout<<" ";
        }    
        cout<<endl; 
    }
    for(int i=n-1;i>=1;i--){
        for(int j=1;j<=n-i;j++)  cout<<" ";
        for(int j=1;j<=2*i+3;j++){  
            if(i==1||j==1||j==2*i+3)  cout<<"*";
            else  cout<<" ";
    }
        cout<<endl; 
    }
    return 0;
}
/**************************************************************
	Problem: 1011
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/