Suffix and prefix that ands with ~tion and ~ing and clipped words

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Across
  1. 5. advertisement
  2. 6. puzzling
  3. 7. document
  4. 9. going out
  5. 10. register
  6. 12. vegetables
Down
  1. 1. eating or drinking
  2. 2. careful
  3. 3. worrying
  4. 4. care for someone
  5. 8. teacher
  6. 11. identification