def d(x1,y1,x2,y2):
	return pow((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2),0.5)
x1,y1,x2,y2,x3,y3 = map(int,input().split())
x,y = [x1,x2,x3],[y1,y2,y3]
f = False
for i in range(3):
	for j in range(3):
		if i == j:
			continue
		for k in range(3):
			if i == k or j == k:
				continue
			if y[k] == y[j] + (x[j] - x[i]) and x[k] == x[j] - (y[j] - y[i]):
				print(x[k]-(x[j]-x[i]),y[k]-(y[j]-y[i]))
				f = True
if not f:
	print(-1)