Hypogan or Hypogean: How To spell?

The word Hypogan is misspelled against Hypogean, an adjective meaning "Hypogeous."

--> Hypogean has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets hypog & n is misspelled as 'A'
Wrong Spelling:  hypog-a-n 
Correct Spelling:  hypog-ea-n 
Find more incorrect spellings of Hypogean to spell right way.

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