(0, 0)
(9, 2)
(5, 2)
(3, 1)
(7, 4)
(5, 0)
(2, -3)
(-9, 1)
(7, 1)
(4, 0)
(3, 0)
(-4, -1)
(7, 0)
(-11, 0)
(9, 0)