Irregular verbs

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Across
  1. 3. the past of speak
  2. 5. the past of lose
  3. 6. the past of fall
  4. 9. the past of understand
  5. 11. the past of make
  6. 12. the past of give
  7. 14. the past of go
  8. 15. the past of know
Down
  1. 1. the past of come
  2. 2. the past of buy
  3. 4. the past of break
  4. 6. the past of find
  5. 7. the past of write
  6. 8. the past of have
  7. 10. the past of take
  8. 11. the past of make
  9. 13. the past of eat