- D
- B
- D
- A
- D
- C
- B
- C
- D
- A
- can
- couldn't
- could have gone
- ought not to / shouldn't have told
- don't have / need to
- had to
- can't/couldn't have been
- did you have to
- musn't/must not
- ought to/should
- C
- A
- D
- A
- B
- B
- A
- D
- A
- C
- D
- B
- ought
- had
- can't/could't
- must
- can
- can't
- may/might/could/must
- should/could/may/might
- could/may/might
- not
- could/might
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