可达集合R

先行集合Q

交集A = R ∩ Q

VE

1, 3, 4, 8

1

1

EE

2, 3, 4, 5, 6, 8

2, 5

2, 5

VO

3, 4, 8

1, 2, 3, 4, 5, 6, 7, 8

8, 3, 4

O

3, 4, 8

1, 2, 3, 4, 5, 6, 7, 8

8, 3, 4

VA

2, 3, 4, 5, 6, 8

2, 5

2, 5

S

3, 4, 6, 8

2, 5, 6

6

M

3, 4, 7, 8

7

7

P

3, 4, 8

1, 2, 3, 4, 5, 6, 7, 8

8, 3, 4