Graiving or Greaving: How To spell?

The word Graiving is misspelled against Greaving, which is present continuous of "Greave"

Greaving has vowels 'ea' together mispronounced as 'ai'
Word contains consecutive vowels 'EA' in between alphabets gr & ving is misspelled as 'AI'
Wrong Spelling:  gr-ai-ving 
Correct Spelling:  gr-ea-ving 
Find more wrongly spelled words of Greaving to spell it well.

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