3 3

1 0

1 2

1 0

2 2

1 0

1 0

0 2

0 2

0 1

4 3

0 0

2 3

1 1

1 1

1 0

0 1

2 3

1 1

1 3

2 1

3 4

1 1

0 2

1 3

2 0

1 3

3 0

1 1

0 0

3 0

1 1

0 1

2 0

1 2

1 0

2 0

3 1

1 0

2 0

0 0

1 0

1 0

0 1

1 0

0 1

0 0

1 1

1 1

1 2

1 1

0 0

1 1

0 0

0 0

0 0