(1,1)
(4,3)
(5,-1)
(-3,2)
(-2,4)
(4,-4)
(1,3)
(3,2)
(2,4)
(-1,5)
(-3,1)
(-3,-1)
(-5,-2)
(-4,-3)
(2,-2)
(1,-4)
(5,-4)