Imotta Bounds

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Across
  1. 2. Opposite of out
  2. 4. You send this in the post (I barely know her)
  3. 5. The start of this sentence
  4. 7. In the process of killing someone
Down
  1. 1. One worse than fifth place
  2. 3. An organisation of letters
  3. 6. Not mine, but… (-s)
  4. 8. Two letter word that is within this sentence