#include <bits/stdc++.h>
#define rep(i,a,b) for(int i = (a); i < (b); i++)
#define all(A) (A).begin(),(A).end()
#define MOD 1000000007
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;

int main(void){
	int k; cin >> k;
	deque<char> A,B,C,D;
	A.push_back('A'); A.push_back('E');
	B.push_back('B'); C.push_back('C'); D.push_back('D');
	vector<deque<char>> Q = {A,B,C,D};
	rep(i,0,k){
		Q[(i+1)%4].push_back(Q[i%4].front());
		Q[i%4].pop_front();
	}
	rep(i,0,4){
		rep(j,0,(int)Q[i].size()){
			cout << Q[i][j];
		}
		cout << endl;
	}
}