0

2

2

0

0

1

0

0

1

0

0

1

0

1

1

0

0

0

0

1

2

0

1

1

0

0

2

0

0

0

0

1

1

0

1

1

0

0

1

0

2

3

0

0

1

0

0

1

0

4

4

0

0

1

0

1

4

0

0

0