1 0

1 1

1 0

0 0

1 1

3 0

0 1

1 3

0 1

1 2

1 1

1 2

0 3

0 3

1 2

1 3

1 3

1 3

0 4

3 0

4 0

2 4

0 0

0 1

1 2

1 2

1 0

3 0

0 2

0 2

0 2