using System;

class FirThree
{
    static void Main()
    {
        byte n, line, current, last;
        int lenght, left, right;
        n = byte.Parse(Console.ReadLine());
        if ((n >= 4) && (n <= 100))
        {
            lenght = (2 * n) + 1;
            for (line = 1; line <= n; line++)
            {
                left = (n + 1) - line;
                right = (n - 1) + line;
                for (current = 0; current < lenght; current++)
                {
                    if ((current >= left) && (current <= right))
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(".");
                    }
                }
                Console.WriteLine();
            }
            for (last = 0; last < lenght; last++)
            {
                if (last == n)
                {
                    Console.Write("*");
                }
                else
                {
                    Console.Write(".");
                }
            }
            Console.WriteLine();
        }
    }
}