irregular verbs

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Across
  1. 2. past participle of choose
  2. 4. past pasticiple of write
  3. 5. past participle of stick
  4. 6. simple past of shake
  5. 7. past participle of feed
  6. 10. simple past of catch
  7. 11. simple past of sing
  8. 14. past participle of read
Down
  1. 1. simple past of understand
  2. 3. past participle of hurt
  3. 8. past participle of eat
  4. 9. simple past of pay
  5. 11. simple past tense of sell
  6. 12. past participle of go
  7. 13. simple past of bring