2

0

2

0

0

2

1

2

1

0

0

1

1

2

1

0

0

3

3

1

0

1

2

1

1

0

2

0

0

3

2

1

1

0

3

2

0

1

4

3

0

3

1

0

1

0

0

2

2

2