#include<bits/stdc++.h>
using namespace std;

int main(){
	string s[2],d;s[0] = "LEFT";s[1] = "GO";
	int c = 0,n,m;
	int map[1111][1111],x,y;
	bool all_explored = 0;
	while (true) {    
		string feedback;
    	string command = s[c%2];
    	c++;
    	cout<<command<<endl;
		cin>>feedback; 
    	if(all_explored) { 
			cout << "END" << endl;  
			cout << n << " " << m << endl;
		    for (int i = 0; i < n; i++) { 
			    for (int j = 0; j < m; j++) { 
				    cout << map[i][j];            
				}            
				cout << endl;        
			} break;
		}else{
			if(feedback!="FAIL")
				d = feedbeck;
			else
				
		}
	}

	return 0;
}