Irregular verbs in past participle

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Across
  1. 2. Built
  2. 6. Lost
  3. 7. Grown
  4. 8. Given
  5. 9. Seen
  6. 10. Been
  7. 11. Kept
  8. 14. Held
  9. 16. Bought
  10. 17. Fed
  11. 18. Bitten
  12. 20. Left
  13. 21. Known
  14. 22. Ridden
  15. 24. Begun
  16. 25. Hung
Down
  1. 1. Hidden
  2. 3. Dug
  3. 4. Chosen
  4. 5. Broken
  5. 8. Got
  6. 10. Bled
  7. 12. Paid
  8. 13. Done
  9. 15. Driven
  10. 17. Felt
  11. 19. Become
  12. 22. Rung
  13. 23. Drunk
  14. 24. Brought