(8, 19) (8, 19) True
(8, 19) (1, 12) True
(8, 19) (17, 21) True
(8, 19) (5, 6) False
(8, 19) (9, 19) True
(1, 12) (8, 19) True
(1, 12) (1, 12) True
(1, 12) (17, 21) False
(1, 12) (5, 6) True
(1, 12) (9, 19) True
(17, 21) (8, 19) True
(17, 21) (1, 12) False
(17, 21) (17, 21) True
(17, 21) (5, 6) False
(17, 21) (9, 19) True
(5, 6) (8, 19) False
(5, 6) (1, 12) True
(5, 6) (17, 21) False
(5, 6) (5, 6) True
(5, 6) (9, 19) False
(9, 19) (8, 19) True
(9, 19) (1, 12) True
(9, 19) (17, 21) True
(9, 19) (5, 6) False
(9, 19) (9, 19) True
4