Presidential succesion

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Across
  1. 2. 6th president
  2. 5. 9th president
  3. 7. 11th president
  4. 8. 5th president
  5. 9. 8th president
  6. 11. 4th president
Down
  1. 1. 1st president
  2. 2. 2nd president
  3. 3. 3rd president
  4. 4. 12th president
  5. 6. 10th president
  6. 10. 7th president