#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;++i)
int main() {
    vector<deque<char>> que{ {'A','E'},{'B'},{'C'},{'D'} };
    int k; cin >> k;
    rep(i,k) {
        que[(i + 1) % 4].push_back(que[i % 4].front());
        que[i % 4].pop_front();
    }
    rep(i,4) {
        rep(j, que[i].size())cout << que[i][j];
        cout << "\n";
    }
}