#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: wuhanyu
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/