Shay D Sort

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