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1Exercise 21
2Exercise 22
3Exercise 23
4Exercise 24
5Exercise 25
6Exercise 26
7Exercise 27
8Exercise 28
9Exercise 29
10Exercise 30
11Exercise 31
12Exercise 32
13Exercise 33
14Exercise 34
15Exercise 35
16Exercise 36
17Exercise 37
18Exercise 38
19Exercise 39
20Exercise 40