U

a

b

c

l 1

l 2

l 3

x 1

8

4

6

1

0

0

x 2

6

3

6

0

1

0

2

6

7

1

0

1

x 4

9

3

8

1

0

1

x 5

3

3

8

0

0

1

x 6

4

8

4

0

1

0