Shivers

(1, 1) (1, 2) (1, 3) (1, 4)
(2, 1) (2, 2) (2, 3) (2, 4)
(3, 1) (3, 2) (3, 3) (3, 4)
(4, 1) (4, 2) (4, 3) (4, 4)
(5, 1) (5, 2) (5, 3) (5, 4)
(6, 1) (6, 2) (6, 3) (6, 4)
(7, 1) (7, 2) (7, 3) (7, 4)
(8, 1) (8, 2) (8, 3) (8, 4)
(9, 1) (9, 2) (9, 3) (9, 4)
(10, 1) (10, 2) (10, 3) (10, 4)