Aothenticating or Authenticating: How To spell?

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

Word begins with consecutive vowels 'AU' followed by alphabets 'thenticating' is misspelled as 'AO'
Wrong Spelling:  ao-thenticating 
Correct Spelling:  au-thenticating 
Find more incorrect spellings of Authenticating to spell right way.

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