import java.io.PrintWriter
import java.util.*
import kotlin.math.*

fun PrintWriter.solve() {
    val k = nextInt()
    val ques = Array(4) { ArrayDeque<Char>() }
    ques[0].addLast('A')
    ques[0].addLast('E')
    ques[1].addLast('B')
    ques[2].addLast('C')
    ques[3].addLast('D')
    for (i in 0 until k) {
        val c = ques[i % 4].pollFirst()!!
        ques[(i + 1) % 4].addLast(c)
    }
    for (i in 0 until 4) {
        println(ques[i].joinToString(""))
    }
}

fun main() {
    Thread(null, {
        val writer = PrintWriter(System.out, false)
        writer.solve()
        writer.flush()
    }, "solve", abs(1L.shl(26)))
        .apply { setUncaughtExceptionHandler { _, e -> e.printStackTrace(); kotlin.system.exitProcess(1) } }
        .apply { start() }.join()
}

// region Scanner
private var st = StringTokenizer("")
private val br = System.`in`.bufferedReader()

fun next(): String {
    while (!st.hasMoreTokens()) st = StringTokenizer(br.readLine())
    return st.nextToken()
}

fun nextInt() = next().toInt()
fun nextLong() = next().toLong()
fun nextLine() = br.readLine()
fun nextDouble() = next().toDouble()
// endregion