DNA

using System;

namespace DNASequence
{
    public class Sequence
    {
        public static void Main()
        {
            int matchSum = int.Parse(Console.ReadLine());

            for(int i =1; i<=4; i++)
            {
                for (int j=1; j<=4; j++)
                {
                    for (int k=1; k<=4; k++)
                    {
                        string wrap = i + j + k >= matchSum ? "O" : "X";
                        Console.Write($"{wrap}{i}{j}{k}{wrap} "
                            .Replace("1","A")
                            .Replace("2","C")
                            .Replace("3","G")
                            .Replace("4","T"));
                    }
                    Console.WriteLine();
                }

            }


        }
    }
}