#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

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

    vector<deque<char>> q(4);
    q[0] = {'A', 'E'};
    q[1] = {'B'};
    q[2] = {'C'};
    q[3] = {'D'};

    rep(i, 0, K){
        char c = q[i%4].front();
        q[i%4].pop_front();
        q[(i+1)%4].push_back(c);
    }

    rep(i, 0, 4){
        for(char c : q[i]) cout << c;
        cout << endl;
    }
    return 0;
}