[
[(1,1),(1,2),(1,3)],
[(2,1),(2,2),(2,3)],
[(3,1),(3,2),(3,3)]
];
[
[(1,4)],
[(2,4)],
[(3,4)]
];
[
[(4,1),(4,2),(4,3)]
];
[
[(4,4)]
]