#include<iostream>
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-1;j++)
                cout<<"*";
          
      
        for(int j=1;j<=n-i;j++)
            cout<<" ";
          
      
        for(int j=1;j<=n-i;j++)
            cout<<" ";
          
          
        for(int j=1;j<=2*i-1;j++)
                cout<<"*";
          
      
        for(int j=1;j<=n-i;j++)
            cout<<" ";
          
      
        for(int j=1;j<=n-i;j++)
            cout<<" ";
          
      
        for(int j=1;j<=2*i-1;j++)
                cout<<"*";
          
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1006
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/