Pining or Paining: How To spell?

The word Pining is misspelled against Paining, which is present continuous of "Pain"

Word contains consecutive vowels 'AI' in between alphabets p & ning is misspelled as 'I'
Wrong Spelling:  p-i-ning 
Correct Spelling:  p-ai-ning 
Find more wrongly spelled words of Paining to spell it well.

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