IE or EI

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Across
  1. 4. how heavy something is
  2. 6. reach attain
  3. 8. grab
  4. 9. take delivery of
  5. 11. someone you like
  6. 13. to trick
  7. 14. leader
  8. 15. cleanliness
  9. 17. sadness
Down
  1. 1. a number
  2. 2. naughtiness
  3. 3. man of the church
  4. 5. short
  5. 7. free time
  6. 10. above you, maximum
  7. 12. daughter of your brother or sister
  8. 16. give in
  9. 18. grasslands