Tetris

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _3.Tetris
{
    class Tetris
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string currentDirection = Console.ReadLine();

            while (currentDirection != "exit")
            {
                switch (currentDirection)
                {
                    case "up":       Up(n);       break;
                    case "down":     Down(n);     break;
                    case "left":     Left(n);     break;
                    case "right":    Right(n);    break;
                }
                currentDirection = Console.ReadLine();
            }
        }

        static void Left(int n)
        {
            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('.', n) + new string('*', n));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', 2 * n));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('.', n) + new string('*', n));
            }
        }

        static void Right(int n)
        {
            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', n) + new string('.', n));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', 2 * n));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', n) + new string('.', n));
            }
        }

        static void Up(int n)
        {
            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('.', n)+ new string('*', n)+ new string('.', n));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', n * 3));
            }
        }

        static void Down(int n)
        {
            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('*', n * 3));
            }

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine( new string('.', n) + new string('*', n) + new string('.', n));
            }
        }
    }
}