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

using ll = long long;
#define all(A) A.begin(),A.end()
using vll = vector<ll>;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
using Graph = vector<vector<ll>>;



int main() {
	vector<deque<char>> D(4);
	D[0].push_back('A');
	D[0].push_back('E');
	D[1].push_back('B');
	D[2].push_back('C');
	D[3].push_back('D');
	
	ll K;
	cin>>K;
	rep(i,K){
		char C=D[i].front();
		D[i].pop_front();
		D[(i+1)%4].push_back(C);
	}
	rep(i,4){
		while(!D[i].empty()){
			char C=D[i].front();
		D[i].pop_front();
		cout<<C;
		}
		cout<<endl;
	}
}