What is the difference between exempt and non-exempt position?

What difference does the position of 'just' make?

• I know that 'just' is often used as a adverb. And as I am not native English speaker, I can't well figure out what differences in terms of meanings can be made by the position that 'just' is located. For example, What are differences among these sentences? A. I am dying to eat it just as badly as you are. B. I am just dying to eat it as badly as you are. C. I am eager to eat it as badly just as you are. D. I am eager to eat it as badly as just you are. Maybe this question would be felt a bit foolish. But I am really wondering how it is. I need your help desperately. Thanks you all.

• Answer:

  A. Just means equally as badly as you are. B. Just means very much dying to eat it C. Just means in the same way as you are. D. Just means only you and no one else.