using System;

public class Program

{

    public static void Main()

    {

        int [] trainingData = new int[] {0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1};

        for(int index = 0; index < trainingData.Length; index++)

        {       

            if(index % 4 ==0)

                Console.WriteLine();

            Console.Write(string.Format("{0}", trainingData[index] == 1 ? "X": " "));       

        }

    }

}