past forms

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Across
  1. 3. say
  2. 4. know
  3. 7. play
  4. 8. sell
  5. 10. find
  6. 11. teach
  7. 12. go
  8. 14. buy
  9. 15. come
  10. 16. put
Down
  1. 1. do
  2. 2. give
  3. 5. walk
  4. 6. mean
  5. 9. drive
  6. 12. are
  7. 13. take
  8. 15. cost