s = list(map(int, input().split()))
p = [(s[i], s[i+1]) for i in range(0, 6, 2)]
from itertools import permutations
for x, y, z in permutations(p):
    xy = (y[0] - x[0], y[1] - x[1])
    yz = (z[0] - y[0], z[1] - y[1])
    if (-xy[1], xy[0]) == yz:
        w = (x[0] + z[0] - y[0], x[1] + z[1] - y[1])
        print(*w)
        break
else:
    print(-1)