1. to fall
2. to drop
3. to lag behind
4. to lose
5. to go missing
6. to reduce
7. fall (in prices)
8. to lose (value, weight etc)
9. to wag
10. to swing
11. to turn
12. to change
13. to exchange
14. to swap
15. to show off
16. to shed (hair)
17. (used after certain verbs to express completion, fulfillment, removal etc)

1. squadron
2. team
3. group

classifier: 個