Aathenticating or Authenticating: How To spell?

The word Aathenticating is misspelled against Authenticating, which is present continuous of "Authenticate"

Word begins with consecutive vowels 'AU' followed by alphabets 'thenticating' is misspelled as 'AA'
Wrong Spelling:  aa-thenticating 
Correct Spelling:  au-thenticating 
Find more wrongly spelled words of Authenticating to spell it well.

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