some plural nouns

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Across
  1. 4. tooth
  2. 8. leaf
  3. 9. octopus
  4. 10. mouse
  5. 11. sheep
  6. 13. baby
  7. 15. child
  8. 16. woman
  9. 17. potato
Down
  1. 1. foot
  2. 2. city
  3. 3. tomato
  4. 5. hero
  5. 6. man
  6. 7. knife
  7. 12. fish
  8. 13. box
  9. 14. person