Sl

Lu

S

R

D

Sl

1

2

3

5

6

Lu

1/2

1

2

3

5

S

1/3

1/2

1

2

3

R

1/5

1/3

1/2

1

2

D

1/6

1/5

1/3

1/2

1

∑ai

2.20

4.03

6.80

11.5

17