import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        if(n<=-10 || n>=10 || n%2==0){
             System.out.print("Invalid input");
             return;
        }
        int n = sc.nextInt();
        
       for(int i=1; i<=n ;i++)
            {
            for(int j=1 ; j<n+1;j++){
                 if(i==1 || i==n || j==1 || j==n || i==j || i+j==n+1)
                 {
                     System.out.print("* ");
                 } 
                 else
                 {
                     System.out.print("  ");
                 }
             }System.out.println();
             }
    }}