#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

int K;
queue<char> que[4];

int main() {
  cin >> K;
  que[0].push('A'); que[0].push('E');
  que[1].push('B');
  que[2].push('C');
  que[3].push('D');
  for (int i = 0; i < K; i++) {
    int a = que[i % 4].front(); que[i % 4].pop();
    que[(i + 1) % 4].push(a);
  }
  for (int i = 0; i < 4; i++) {
    while (!que[i].empty()) {
      int a = que[i].front(); que[i].pop();
      cout << char(a);
    }
    cout << endl;
  }
  return 0;
}