1

0

1

2

1

0

2

1

1

1

1

4

2

0

1

1

2

0

1

0

2

0

2

0

2

0

2

1

2

2

2

0

2

0

2

3

2

1

2

3

1

2

1

0

1

0

1

0

2

2