Heithenizing or Heathenizing: How To spell?

The word Heithenizing is misspelled against Heathenizing, which is present continuous of "Heathenize"

Heathenizing has vowels 'ea' together mispronounced as 'ei'
Word contains consecutive vowels 'EA' in between alphabets h & thenizing is misspelled as 'EI'
Wrong Spelling:  h-ei-thenizing 
Correct Spelling:  h-ea-thenizing 
Find more wrongly spelled words of Heathenizing to spell it well.

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