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//#include "stdafx.h"


#include <algorithm>
#include <iostream>
#include <string>
#include <cstring>
#include <fstream>
#include <cmath>
#include <vector>
#include <utility>
#include <cstdlib>
#include <deque>
#include <queue>
#include <iomanip>
#include <numeric>
#include <stack>
#include <map>
//#include <unordered_map>
#include <set>
//#include <unordered_set>
#include <cmath>
#include <list>
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pnt pair<int, int>
#define preturn(a) return cout << a << endl, 0

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef unsigned int uint;
const int N = (int)250000, mdt = 1e7, limit = 1e8;
const ld eps = 1e-8, eps1 = 1e-20, PI = 3.14159265358979323846264338, OOO = 1e100L, lim = sqrt(2e9 + 100);
const ll OO = 1e18 * 8, mod = 1e9 + 7, md = 4294967291;

pair<pnt, pnt> a[10];

bool check_x(int v)
{
	int m, b;
	m = b = 0;
	for (int i = 0; i < 4; i++)
		if (a[i].x.x <= v && a[i].y.x <= v)
			m++;
		else if (a[i].x.x >= v && a[i].y.x >= v)
			b++;
		else
			return 0;
	return (m == b);
}

bool check_y(int v)
{
	int m, b;
	m = b = 0;
	for (int i = 0; i < 4; i++)
		if (a[i].x.y <= v && a[i].y.y <= v)
			m++;
		else if (a[i].x.y >= v && a[i].y.y >= v)
			b++;
		else
			return 0;
	return (m == b);
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie();
	cout.tie();
	for (int i = 0; i < 4; i++)
		cin >> a[i].x.x >> a[i].x.y >> a[i].y.x >> a[i].y.y;
	for (int i = 0; i < 4; i++)
		if (check_x(a[i].x.x))
			return cout << "Vertical" << endl << a[i].x.x, 0;
		else if (check_x(a[i].x.x - 1))
			return cout << "Vertical" << endl << a[i].x.x - 1, 0;
		else if (check_x(a[i].y.x + 1))
			return cout << "Vertical" << endl << a[i].y.x + 1, 0;
		else if (check_y(a[i].x.y))
			return cout << "Horizontal" << endl << a[i].x.y, 0;
		else if (check_y(a[i].x.y - 1))
			return cout << "Horizontal" << endl << a[i].x.y - 1, 0;
		else if (check_y(a[i].y.y + 1))
			return cout << "Horizontal" << endl << a[i].y.y + 1, 0;
	cout << "Impossible";
	return 0;
}