Thirten or Thirteen: How To spell?

The word Thirten is misspelled against Thirteen, a noun meaning "A symbol representing thirteen units, as 13 or xiii."

Thirteen has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Thirt & n which should not be misspelled with single 'E'
Wrong Spelling: Thirt-e-n
Correct Spelling: Thirt-ee-n
Find more wrongly spelled words of Thirteen to spell it well.