class work

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Across
  1. 5. theory
  2. 6. ab
  3. 8. rule
  4. 11. af
  5. 13. rule
  6. 15. book
Down
  1. 1. system
  2. 2. at
  3. 3. system
  4. 4. change
  5. 7. disorder
  6. 9. order
  7. 10. culture
  8. 12. model
  9. 14. system