Months of the year

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Across
  1. 3. January
  2. 5. December
  3. 6. June
  4. 9. April
  5. 10. February
  6. 11. August
Down
  1. 1. May
  2. 2. September
  3. 4. October
  4. 6. July
  5. 7. November
  6. 8. March