using System.Collections.Generic;
using System;

public class Hello
{
    static void Main()
    {
        var k = int.Parse(Console.ReadLine().Trim());
        getAns(k);
    }
    static void getAns(int k)
    {
        var q = new Queue<char>[4];
        for (int i = 0; i < 4; i++) q[i] = new Queue<char>();
        q[0].Enqueue('A');
        q[1].Enqueue('B');
        q[2].Enqueue('C');
        q[3].Enqueue('D');
        q[0].Enqueue('E');
        for (int i = 0; i < k; i++) q[(i + 1) % 4].Enqueue(q[i % 4].Dequeue());
        foreach (var x in q) Console.WriteLine(String.Join("", x));
    }
}