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