#include <bits/stdc++.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll = long long;
using mint = atcoder::modint998244353;
using maxt = atcoder::modint1000000007;

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