Irregular verbs in the past tense

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Across
  1. 1. see
  2. 4. bring
  3. 6. hear
  4. 8. know
  5. 9. dig
  6. 11. have
  7. 13. leave
  8. 14. come
  9. 15. feel
Down
  1. 1. say
  2. 2. go
  3. 3. find
  4. 5. think
  5. 7. run
  6. 10. sleep
  7. 12. make