m

y1

y3

x2

x4

b1

a2

b3

a4

b5

a6

b7

a8

13

3

3

1.5

3

1

0

2

1

2

0

1

2

14

3

3

2

2

1

1

1

1

1

1

1

1

15

3

4

1.5

3

1

0

2

2

0

1

1

2

15

4

5

1

4.5

0

0

2

3

1

0

1

4

16

5

5

1

5

0

0

2

3

2

0

0

5

16

4

6

1

5

0

0

2

4

0

0

2

4

16

5

5

1

4

0

1

0

4

0

1

0

4