(0,8) (0,12) (3,15) (5,15) (5,14)
(3,12) (2,12) (2,9) (4,11) (6,11)
(8,9) (8,13) (10,11) (14,11) (16,13)
(16,7) (15,6) (13,5) (11,5) (9,6)
(8,7) (6,4) (9,4) (9,2) (6,2) (6,6)
(4,6) (3,5) (3,4) (5,4) (5,2) (1,2) (0,8)
(13,10) (15,10) (15,8) (13,8) (13,10)
(9,8) (9,10) (11,10) (11,8) (9,8)
(11,7) (12,8) (13,7) (11,7)