/*
Pattern : 

**********
****  ****
***    ***
**      **
*        *
*        *
**      **
***    ***
****  ****
**********

*/



import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        for(int i = 1 ; i<=n ; i++){
            
            // //x* ( x stars)
            for(int j = 1 ; j <= n+1-i ; j++  ){    //loop 1
                System.out.print("*");
            }
            
            //y- ( y dashes)
            for(int k = 1 ; k <= i-1  ; k++ ){      //loop 2
                System.out.print(" ");
            }
            
            //y- ( y dashes)
            for(int l = 1 ; l <= i-1 ; l++  ){      //loop 3
                System.out.print(" ");
            }
            
            //x* ( x stars)
            for(int m = 1 ; m <= n+1-i  ; m++ ){     //loop 4
                System.out.print("*");
            }
            
            System.out.println();
        }
        
        //===========================================================
        
        for(int i = 1 ; i<=n ; i++){
            // x stars - Loop1
            for(int j=1 ; j<=i ; j++){
                System.out.print("*");
            }


            // y dash = loop 2
            for(int j=1 ; j<= n-i ; j++){
                System.out.print(" ");
            }


            // y dash - loop 3 
            for(int j=1 ; j<= n-i ; j++){
                System.out.print(" ");
            }
            

            // star - loop 4 
            for(int j=1 ; j<=i ; j++){
                System.out.print("*");
            }
            System.out.println();
        }
        
        
        
        
    }
}