#include "testlib.h"
#include <iostream>
#include <deque>
#include <vector>
using namespace std;

int main(){
  registerValidation();
  int K;
  K=inf.readInt(1,100);
  inf.readEoln();
  inf.readEof();
  vector<deque<char>>dq={{'A','E'},{'B'},{'C'},{'D'}};
  for(int i=0;i<K;i++){
    dq.at((i+1)%4).push_back(dq.at(i%4).front());
    dq.at(i%4).pop_front();
  }
  for(int i=0;i<4;i++){
    for(char j:dq.at(i)){
      cout<<j;
    }
    cout<<endl;
  }
  return 0;
}