#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
using namespace std;
using ll = long long;
using pii = pair<int, int>;

int main() {
  int k;
  cin >> k;
  vector<queue<char>> q(4);
  rep(i, 5) q[i % 4].push('A' + i);
  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].size()) {
      char c = q[i].front();
      q[i].pop();
      cout << c;
    }
    cout << endl;
  }
  return 0;
}