#include<bits/stdc++.h>
using namespace std;
int n,m;
char map[105][105];
string command;
int main(){
	while(true){
 		string feedback;
		command="";
 		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{
			
		}
}
	return 0;
}