#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define ll long long
#define ld long double
#define endl '\n'

using namespace std;

ll p;
int x1[10000], x2[10000], y1[10000], y2[10000];
bool z[10000];

int main() {

    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    for(int i = 0; i < 4; ++i) {
        cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
    }
    for(int i = 0; i < 3; ++i) {
        for(int j = 0; j < (4-i); ++j) {
            if ( y1[j] > y1[j + 1] ) {
                p = y1[j];
                y1[j] = y1[j + 1];
                y1[j + 1] = p;
                p = y2[j];
                y2[j] = y2[j + 1];
                y2[j + 1] = p;
            }
        }
    }
    if (y2[1] <= y1[3] && y2[2] <= y1[3] ) {
        cout <<  "Horizontal" << endl;
        cout << y1[3] << endl;
        return 0;
    }
    for(int i = 0; i < 4; ++i) {
        for(int j = 0; j < (4-i); ++j) {
            if ( x1[j] > x1[j + 1] ) {
                p = x1[j];
                x1[j] = x1[j + 1];
                x1[j + 1] = p;
                p = x2[j];
                x2[j] = x2[j + 1];
                x2[j + 1] = p;
            }
        }
    }
    if (x2[1] <= x1[3] && x2[2] <= x1[3] ) {
        cout << "Vertical" << endl;
        cout << x1[3] << endl;
        return 0;
    }
    cout << "Impossible";
    return 0;
}