(2, 19) (2, 19) True
(2, 19) (1, 20) True
(2, 19) (7, 9) True
(2, 19) (3, 6) True
(2, 19) (17, 21) True
(1, 20) (2, 19) True
(1, 20) (1, 20) True
(1, 20) (7, 9) True
(1, 20) (3, 6) True
(1, 20) (17, 21) True
(7, 9) (2, 19) True
(7, 9) (1, 20) True
(7, 9) (7, 9) True
(7, 9) (3, 6) False
(7, 9) (17, 21) False
(3, 6) (2, 19) True
(3, 6) (1, 20) True
(3, 6) (7, 9) False
(3, 6) (3, 6) True
(3, 6) (17, 21) False
(17, 21) (2, 19) True
(17, 21) (1, 20) True
(17, 21) (7, 9) False
(17, 21) (3, 6) False
(17, 21) (17, 21) True
5