#include <bits/stdc++.h>
using namespace std;
string s, aux, salida;
int g = 0, stop = 0;
set<char> pos;
bool good = false;
int main() {
	cin >> s;
	for(int i = 0; i < s.length(); i++){
		pos.insert(s[i]);
	}
	while(!good && cin >> aux && stop < 7){
		for(int i = 0; i < aux.length(); i++){
			if(s[i] == aux[i]){
				salida += "G";
				g++;
			}else if(pos.count(aux[i])){
				salida += "Y";
			}else{
				salida += "X";
			}
		}
		if(g == 5){
			good = true;
		}else{
			if(stop != 6){
				cout << salida << endl;
			}
			stop++;
			salida = "";
			g = 0; 

		}
	}
	if(good){
		cout << "WINNER" << endl;
	}else{
		cout << "LOSER" << endl;
	}
	

	return 0;
}