irregular verbs - part I

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Across
  1. 4. forget
  2. 7. go
  3. 8. put
  4. 10. think
  5. 12. say
  6. 13. write
  7. 15. have
  8. 17. drink
  9. 18. do
  10. 19. come
Down
  1. 1. buy
  2. 2. send
  3. 3. eat
  4. 5. get
  5. 6. take
  6. 8. pay
  7. 9. see
  8. 11. hear
  9. 12. speak
  10. 14. read
  11. 16. make