Ei ie for ee

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Across
  1. 3. hygiene
  2. 7. wield
  3. 9. ceiling
  4. 10. perceive
  5. 12. receive
  6. 13. niece
  7. 15. inconceivable
  8. 16. shriek
  9. 17. yield
  10. 18. conceited
Down
  1. 1. handkerchief
  2. 2. deceive
  3. 4. retrieve
  4. 5. fiendish
  5. 6. reprieve
  6. 8. deceit
  7. 11. siege
  8. 14. achieve