namespace House
{
    using System;
    class House
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            Console.Write("{0}*{0}", new string('.', (n - 1) / 2));
            Console.WriteLine();
            for (int i = 1, j = 1; i < (n) / 2; i++, j+=2)
            {
                Console.Write("{0}*{1}*{0}",new string('.',(n/2)-i),new string('.',(n-n)+j));
                Console.WriteLine();
            }
            Console.WriteLine("{0}",new string('*',n));
            for (int i = 0; i < n/3; i++)
            {
                Console.Write("{0}*{1}*{0}",new string('.', n/4),new string('.',n - 2*(n/4) -2));
                Console.WriteLine();
            }
            Console.Write("{0}{1}{0}",new string('.',n/4),new string('*',n - (n/4)*2));
            Console.ReadLine();
        }
    }
}