using System;

namespace Yuki
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] ss = Console.ReadLine().Split();
            int x1 = int.Parse(ss[0]);
            int y1 = int.Parse(ss[1]);
            int x2 = int.Parse(ss[2]);
            int y2 = int.Parse(ss[3]);
            int x3 = int.Parse(ss[4]);
            int y3 = int.Parse(ss[5]);

            if (a(x1, y1, x2, y2, x3, y3))
            {
                b(x1, y1, x2, y2, x3, y3);
            }
            else if (a(x1, y1, x3, y3, x2, y2))
            {
                b(x1, y1, x3, y3, x2, y2);
            }
            else if (a(x2, y2, x1, y1, x3, y3))
            {
                b(x2, y2, x1, y1, x3, y3);
            }
            else if (a(x2, y2, x3, y3, x1, y1))
            {
                b(x2, y2, x3, y3, x1, y1);
            }
            else if (a(x3, y3, x1, y1, x2, y2))
            {
                b(x3, y3, x1, y1, x2, y2);
            }
            else if (a(x3, y3, x2, y2, x1, y1))
            {
                b(x3, y3, x2, y2, x1, y1);
            }
            else
            {
                Console.WriteLine("-1");
            }
        }

        static bool a(int x1, int y1, int x2, int y2, int x3, int y3)
        {
            int a = y1 - y2;
            int b = x2 - x1;

            if (x2 + a == x3 && y2 + b == y3) return true;

            return false;
        }

        static void b(int x1, int y1, int x2, int y2, int x3, int y3)
        {
            int a = y1 - y2;
            int b = x2 - x1;

            int ax = x3 - b;
            int ay = y3 + a;

            Console.WriteLine("{0} {1}", ax, ay);
        }
    }
}