#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>
#define LP pair<ll, ll>
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define all(s) s.begin(), s.end()
#define rall(s) s.rbegin(), s.rend()
template<class T>
void chmax(T& a, T b) { a = max(a, b); };
template<class T>
void chmin(T& a, T b) { a = min(a, b); };

int main() {
  vector<queue<char>> q(4);
  q[0].push('A'), q[0].push('E');
  q[1].push('B');
  q[2].push('C');
  q[3].push('D');

  int k;
  cin >> k;
  rep(i,k) {
    char c = q[i%4].front(); q[i%4].pop();
    q[(i+1)%4].push(c);
  }
  rep(i,4) {
    while (!q[i].empty()) {
      cout << q[i].front();
      q[i].pop();
    }
    cout << endl;
  }
  return 0;
}