Grasing or Greasing: How To spell?

The word Grasing is misspelled against Greasing, which is present continuous of "Grease"

--> Greasing has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets gr & sing is misspelled as 'A'
Wrong Spelling:  gr-a-sing 
Correct Spelling:  gr-ea-sing 
Find more wrongly spelled words of Greasing to spell it well.

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