Irregular verbs

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Across
  1. 2. Base form of drank
  2. 6. Base form of shut
  3. 7. Base form of understood
  4. 10. Base form of forgot
  5. 11. Base form of lost
  6. 14. Base form of lay
  7. 15. Base form of awoke
  8. 16. Base form of ate
  9. 19. Base form of broke
  10. 20. Base form of blew
Down
  1. 1. Base form of fought
  2. 3. Base form of cost
  3. 4. Base form of built
  4. 5. Base form of bought
  5. 8. Base form of drove
  6. 9. Base form of dug
  7. 10. Base form of fell
  8. 12. Base form of showed
  9. 13. Base form of slept
  10. 17. Base form of threw
  11. 18. Base form of fell
  12. 20. Base form of bet