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

int main() {
    vector<deque<int>>tmp(4);
    tmp[0].push_back(0);
    tmp[0].push_back(4);
    tmp[1].push_back(1);
    tmp[2].push_back(2);
    tmp[3].push_back(3);
    int K;
    cin >> K;
    for(int i = 0; i < K; i++) {
        int a = tmp[i%4].front();
        tmp[i%4].pop_front();
        tmp[(i+1)%4].push_back(a);
    }
    for(int i = 0; i < 4; i++) {
        while (!tmp[i].empty()) {
            cout << (char)((tmp[i].front()+'A'));
            tmp[i].pop_front();
        }
        cout << endl;
    }
}