Plural Forms

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Across
  1. 2. thesis
  2. 4. stimulus
  3. 5. tooth
  4. 6. company
  5. 8. mouse
  6. 10. analysis
  7. 12. series
  8. 13. year
Down
  1. 1. person
  2. 3. fish
  3. 4. sheep
  4. 6. crisis
  5. 7. nucleus
  6. 9. foot
  7. 11. life