Gorgonaion or Gorgoneion: How To spell?

The word Gorgonaion is misspelled against Gorgoneion, a noun meaning "A mask carved in imitation of a Gorgon's head."

Word contains consecutive vowels 'EI' in between alphabets gorgon & on is misspelled as 'AI'
Wrong Spelling:  gorgon-ai-on 
Correct Spelling:  gorgon-ei-on 
Find more incorrect spellings of Gorgoneion to spell right way.