The best Crossword

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Across
  1. 3. replaced by x/y
  2. 4. has many plugins
  3. 7. two lives create another life
  4. 9. word you use to ask for the reason
  5. 10. person who run in competition
  6. 11. left side of the periodic table
  7. 14. base x height
  8. 15. person who recites and sings stories
  9. 16. eating problem
  10. 17. add all sides
Down
  1. 1. calulable forms
  2. 2. the meat contributes...
  3. 5. electronic utensil to do work
  4. 6. right side of the periodic table
  5. 8. is the person who commits illegal acts
  6. 12. it is the most important verb in English
  7. 13. reduce the normal price of a product