Irregular verbs and words

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Across
  1. 4. Run,ran,_____
  2. 5. Fall,fell,_____
  3. 7. _____,said,said
  4. 9. Think,_______,thought
  5. 11. _______,wrote,written
  6. 12. Grow,______,grown
  7. 15. Would
  8. 17. Dig,dug,_______
  9. 18. Stand,_______,stood
Down
  1. 1. Win,_______,won
  2. 2. _____,built,built
  3. 3. Learn,_______learnt
  4. 4. Ring,______rung
  5. 6. Should
  6. 7. Show,________,shown
  7. 8. See,______seen
  8. 10. _____,hurt,hurt
  9. 13. Sleep,slept,______
  10. 14. Voisi
  11. 16. Swin,swam,______
  12. 18. Sit,sat,_______