Affixes

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Across
  1. 4. beyond natural
  2. 6. playing together
  3. 7. circle half of a circle
  4. 9. before a test
Down
  1. 1. not aware
  2. 2. not stopping
  3. 3. three-wheeled bike
  4. 5. against climax
  5. 7. under water
  6. 8. after-birth