#include <iostream>

using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    short table[8][8];
    char x;
    for (int i = 0; i < 8; ++i) {
        for (int j = 0; j < 8; ++j) {
            cin >> x;
            if(x=='S'){
                table[i][j] = 1;
            } 
            else if(x=='V') {
                table[i][j] = -1;
            }
            else {
                table[i][j] = 0;
            }
        }
    }
    int prev;
    for (int i = 0; i < 8; ++i) {
        prev=-1*prev;
        for (int j = 0; j < 8; ++j) {
            if(i==0 && j==0) {
                prev=table[0][0];
            }
            else{
                if(table[i][j] != -1*prev && table[i][j] != 0) {
                    cout << "LEHETETLEN\n";
                    return 0;
                }
                prev = -1*prev;
            }
        }
    }
    cout << "LEHETSEGES\n";
    cin >> x;
    return 0;
}