Irregular plural nouns

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Across
  1. 3. - knife
  2. 5. - a deer
  3. 6. - wolf
  4. 7. - man
  5. 8. - child
  6. 11. - tooth
Down
  1. 1. - person
  2. 2. - a goose
  3. 4. - foot
  4. 6. - woman
  5. 7. - mouse
  6. 9. - leaf
  7. 10. - octopus