Success and failure

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Across
  1. 4. something who is not normally
  2. 7. pass an exam or something
  3. 8. can be due to a mistake
  4. 9. the contrary of fail
Down
  1. 1. a bad student
  2. 2. a sudden loss of power
  3. 3. pain and suffering
  4. 5. an important discovery
  5. 6. a person who don’t have a work