Operation preposition

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Across
  1. 3. ......us
  2. 5. The opposite of inside
  3. 6. Below the surface
  4. 9. Inside
Down
  1. 1. 1 less than five
  2. 2. Gone or gone by
  3. 4. Kind character
  4. 7. what goes up must come.....DOWN!!
  5. 8. Interference from
  6. 9. Important enough