0

1 0

1 0
1 1

1 0
3 1

1 0
2 1

1 0
2 1
1 2

1 0
2 1
2 2

1 0
2 1
3 2

1 0
2 1
2 2

1 0
2 1
3 2

1 0
2 1
3 2
1 3

1 0
3 1
3 2
2 3

1 0
2 1
2 2
3 3

1 0
2 1
3 2
2 3