#include<bits/stdc++.h>

using namespace std;
 
typedef long long int ll;
typedef long double ld;
#define f first
#define s second
#define pb push_back
#define pii pair<int, int>

 
const int N = 2e5 + 100;
const int inf = 1e9;
const ll mod =  998244353;


bool mark[10];

int main()
{
	string s, t = "";
	cin >> s;
	
	for(int i = 0; i < 5; i++)
		mark[(s[i]-'A')] = 1;
	//cout << mark[0] << endl;	
	int cnt = 0;
	while(1)
	{
		string ans = "";
		cin >> t;
		cnt++;
		if(t == s)
		{
			cout << "WINNER" << endl;
			return 0;
		}
		else if(cnt == 7)
		{
			cout << "LOSER" << endl;
			return 0;
		}
		for(int i = 0; i < 5; i++)
		{
			//cout << i << ' ' << << ' ' << mark[(s[i]-'A')] << endl;
			if(s[i] == t[i])
				ans += 'G';
			else if(mark[(t[i]-'A')])
				ans += 'Y';
			else
				ans += 'X';		
		}
		cout << ans << endl;
	}
	
					 
	
	
    return 0;
}