Print

import java.util.Scanner;

public class Program {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        int number = input.nextInt();

        for (int i = 0; i < number/2; i++) {
            printChar('.', i);
            printChar('*',number -i*2);
            printChar('.', i);
            System.out.println();
        }
        printChar('.', number/2);
        printChar('*', 1);
        printChar('.', number/2);
        System.out.println();
        for (int i = number/2-1; i >= 0; i--) {
            printChar('.', i);
            printChar('*', number -i*2);
            printChar('.', i);
            System.out.println();
        }
    }

    private static void printChar(char c, int i) {
        for (int j = 0; j < i; j++) {
            System.out.print(c);
        }
    }
}