#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(){
    vector<queue<char>> que(4);
    que[0].push('A');
    que[0].push('E');
    que[1].push('B');
    que[2].push('C');
    que[3].push('D');

    int K;
    cin >> K;

    rep(i, 0, K){
        char c = que[i%4].front();
        que[i%4].pop();
        que[(i+1)%4].push(c);
    }

    rep(i, 0, 4){
        while(!que[i].empty()){
            cout << que[i].front();
            que[i].pop();
        }
        cout << endl;
    }

    return 0;
}