/***************************************************************************
 * Name:
 * NetID:
 * Precept:
 *
 * Description: It's a secret.
 *
 * Dependencies: None.
 ***************************************************************************/

public class SecretMessage {
    public static void main(String[] args) { 
        int n = Integer.parseInt(args[0]);
        for (int i = -3*n/2; i <= n; i++) {
            for (int j = -3*n/2; j <= 3*n/2; j++) {

                // inside either diamond or two circles
                if ( (Math.abs(i) + Math.abs(j) < n)
                     || ((-n/2-i) * (-n/2-i) + ( n/2-j) * ( n/2-j) <= n*n/2)
                     || ((-n/2-i) * (-n/2-i) + (-n/2-j) * (-n/2-j) <= n*n/2)
                   )
                       System.out.print("* ");
                else   System.out.print(". ");
            }
            System.out.println();
        }
    }
}