#include <iostream>
#include <vector>

using namespace std;

int main()
{
	vector<vector<char>> tablas(9, vector<char> (9));
	vector<vector<char>> tablav(9, vector<char> (9));
	for (int i = 1; i <= 8; ++i) {
		for (int j = 1; j <= 8; ++j) {
			if (j % 2 == 0) {
				tablas[i][j] = 'S';
				tablav[i][j] = 'V';
			}
			else {
				tablas[i][j] = 'V';
				tablav[i][j] = 'S';
			}
		}
	}

	vector<vector<char>> m(9, vector<char> (9));
	for (int i = 1; i <= 8; ++i) {
		for (int j = 1; j <= 8; ++j) {
			cin >> m[i][j];
		}
	}

	bool s = true, v = true, f = true;
	for (int i = 1; i <= 8; ++i) {
		for (int j = 1; j <= 8; ++j) {
			if (m[i][j] != 'F' && m[i][j] != tablas[i][j]) s = false;
			if (m[i][j] != 'F' && m[i][j] != tablav[i][j]) v = false;
			if (m[i][j] != 'F') f = false;
		}
	}

	if (s || v) cout << "LEHETSEGES\n";
	else cout << "LEHETETLEN\n";
}