Aighteenth or Eighteenth: How To spell?

The word Aighteenth is misspelled against Eighteenth, a noun meaning "The eighth after the tenth."

Word begins with consecutive vowels 'EI' followed by alphabets 'ghteenth' is misspelled as 'AI'
Wrong Spelling:  ai-ghteenth 
Correct Spelling:  ei-ghteenth 
Find more wrongly spelled words of Eighteenth to spell it well.