1

−5

2–3

−4

4–5

−3

6–7

−2

8–9

−1

10–11

+0

12–13

+1

14–15

+2

16–17

+3

18–19

+4

20–21

+5

22–23

+6

24–25

+7

26–27

+8

28–29

+9

30

+10