2 2

1 0

1 0

1 1

2 0

0 1

0 1

0 1

4 2

1 3

1 2

1 1

1 1

3 2

1 0

1 1

1 3

0 2

0 1

1 3

1 1

3 1

1 1

1 1

1 0

0 2

2 0

2 1