Bithysm or Bitheism: How To spell?

The word Bithysm is misspelled against Bitheism, a noun meaning "Belief in the existence of two gods; dualism."

Word contains consecutive vowels 'EI' in between alphabets bith & sm is misspelled as 'Y'
Wrong Spelling:  bith-y-sm 
Correct Spelling:  bith-ei-sm 
Find more wrongly spelled words of Bitheism to spell it well.