#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
#include <string>
#include <map>
#include <queue>
#include <bitset>
#include <vector>
#include <stack>
#include <cmath>
#include <set>
#include <cassert>
#include <random>
#include <chrono>
#include <ctime>
#include <cstdlib>
#define pii pair<int,int> 
#define mp make_pair
#define pb emplace_back
#define debug() cout<<"qwq"<<endl
typedef long long ll;
typedef double db;
typedef long double ldb;
typedef unsigned long long ull;
const int DMAX = 100000 + 5;
const double INF = 1e9;
const int MOD = 998244353;
using namespace std;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
template<class T> inline void read(T &x){
    T f=1; x=0; char ch=getchar();
    while(ch<'0' || ch>'9'){
        if(ch=='-') f=-1; 
        ch=getchar();
    }
    while(ch<='9' && ch>='0'){ x=x*10+ch-'0';ch=getchar(); }
    x*=f;
}
int main(){
    cout<<"ACML\nIKOJ\nEHJN\nPBDF\n";
    return 0;
}