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

int main()
{
	int K;
	cin >> K;

	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' );
	for( int i = 0; i < K; i++ ) {
		char c = q[i % 4].front();
		q[i % 4].pop();
		q[(i + 1) % 4].push( c );
	}

	for( int i = 0; i < 4; i++ ) {
		while( q[i].size() ) {
			cout << q[i].front();
			q[i].pop();
		}
		cout << endl;
	}
}