import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int x1, y1, x2, y2, x3, y3;
		x1 = scanner.nextInt();
		y1 = scanner.nextInt();
		x2 = scanner.nextInt();
		y2 = scanner.nextInt();
		x3 = scanner.nextInt();
		y3 = scanner.nextInt();

		if (f(x1, y1, x2, y2, x3, y3) || f(x1, y1, x3, y3, x2, y2) || f(x2, y2, x1, y1, x3, y3)
				|| f(x2, y2, x3, y3, x1, y1) || f(x3, y3, x2, y2, x1, y1) || f(x3, y3, x1, y1, x2, y2)) {

		} else {
			System.out.println(-1);
		}

	}

	private static boolean f(int x1, int y1, int x2, int y2, int x3, int y3) {
		int dx = x2 - x1;
		int dy = y2 - y1;
		if (y3 == y2 + dx && x3 == x2 - dy) {
			int x4 = x3 - dx;
			int y4 = y3 - dy;
			System.out.println(x4 + " " + y4);
			return true;
		}
		return false;
	}

}