#include<algorithm>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>
#include<queue>
#define ll long long
#define MAXN 10000
using namespace std;
ll a[99][99];
int main()
{
	for(ll i=0;i<4;i++)
		for(ll j=0;j<4;j++)	
			cin>>a[i][j];
	for(ll i=0;i<4;i++)
	{
		for(ll j=0;j<4;j++)
		{
			if((a[i][j]==a[i][j+1]&&j+1<4)||(a[i][j]==a[i+1][j]&&i+1<4))
			{
				cout<<"CONTINUE"<<endl;
				return 0;
			}
			else 
			{
				cout<<"GAMEOVER"<<endl;
				return 0;
			}
		}
	}
	return 0;
}