#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ld=long double;
using vi=vector<int>;
using vvi=vector<vi>;
using pii=pair<int,int>;
const int mod=1000000007;
const double pi=3.14159265358979;
#define overload4(a, b, c, d, e, ...) e
#define rep1(i, n)       for(int i = 0; i < n; i++)
#define rep2(i, a, n)    for(int i = a; i < n; i++)
#define rep3(i, a, n, b) for(int i = a; i < n; i += b)
#define rep(...) overload4(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)
#define ALL(a) (a).begin(),(a).end()

int main(){
  int k;
  cin>>k;
  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');
  rep(i,k){
    char c=que[i%4].front();
    que[i%4].pop();
    que[(i+1)%4].push(c);
  }
  rep(i,4){
    while(!que[i].empty()){
      cout<<que[i].front();
      que[i].pop();
    }
    cout<<endl;
  }
}