Findings:
- Friday the 13th
- 13th Floor Elevators
- 13 challenges for the 13th generation
- At my 13th birthday party
- Daily Evil - Friday, October 13th
- Monday the 13th
- You couldn't use a time machine to visit the 13th century
- Guide to Chord Formation : 9ths, 11ths, 13ths
- Face it, you live on the 13th floor
- Paris 13th district
- 13th Duke Of Wimborne
- 13th Amendment
- Friday the 13th Part Two
- Friday the 13th Part Three
- Friday the 13th: The Final Chapter
- Friday the 13th: A New Beginning
- Friday the 13th Part VI: Jason Lives
- Friday the 13th Part VII: The New Blood
- Friday the 13th Part VIII: Jason Takes Manhattan
- Nightmare on the 13th Floor
- 13th disciple (user)
- 13th Warrior
- Old Growth Forests, 13th Century Temples, and Rites of Spring
- Tuesday the 13th
- 13th century
- John Ian Russell, 13th Duke of Bedford
- The 13th Hour
- A black cat walking under a ladder and breaking a mirror on Friday the 13th
- 2014 Florida 13th Congressional District Special Election
- 13th Age
- December
- December 25
- December 7, 1941
- Waiting for December
- December 1, 1999
- December 3
- December 2, 1999
- December 3, 1999
- December 4, 1999
- December 5, 1999
- December 31, 1999
- December 6, 1999
- December 8
- December 7, 1999
- December 8, 1999
- December 9, 1999
- December 10, 1999
- December 11, 1999
- December 12, 1999
- December 13, 1999
- December 14, 1999
- December 15, 1999
- Dream Log: December 14, 1999
- December 16, 1999
- December 17, 1999
- December 18, 1999
- December 19, 1999
- December 28
- December 20, 1999
- December 22, 1999
- December 24, 1999
- Dream Log: December 24, 1999
- Dream Log: December 17, 1999
- December 25, 1999
- December 26, 1999
- December 27, 1999
- Dream Log: December 27, 1999
- December 28, 1999
- December 23, 1999
- Dream Log: December 28, 1999
- Dream Log: December 29, 1999
- December 29, 1999
- December 30, 1999
- Dream Log: December 30, 1999
- Dream Log: December 31, 1999
- December 23, 2012
- December 3, 1996
- December 11, 1996
- December 12, 1996
- December 13, 1996
- December 22, 1983
- December 31, 2000
- December 21, 2012
- December 25, 1998
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