3 2

0 0

3 0

4 0

0 1

1 2

0 0

1 1

0 1

0 0

1 1

0 1

2 0

0 4

1 1

1 2

1 1

0 0

0 0

0 1

4 1

3 2

0 1

0 4

0 0

1 1

0 1

0 0

1 0

2 1

1 0

1 2

2 2

1 1

2 0

1 1

2 0

2 2