5

0

1

0

2

0

2

0

1

0

2

0

3

0

2

0

2

0

2

0

3

0

3

0

1

0

1

0

1

0

2

0

1

0

1

0

2

0

1

0

2

1

2

0

1

0

1

0

1

0