#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)

using std::cin;
using std::cout;
using std::vector;
using std::deque;

int main() {
	vector<deque<char>> q{{'A', 'E'}, {'B'}, {'C'}, {'D'}}; 
	
	int k;
	cin >> k;
	
	rep(i, k) {
		char c = q[i%4].front(); 
		q[i%4].pop_front();
		q[(i+1)%4].push_back(c);
	}
	
	rep(i, 4) {
		for (char c : q[i]) cout << c;
		cout << '\n';
	}
	
	return 0;
}