Impiring or Impairing: How To spell?

The word Impiring is misspelled against Impairing, which is present continuous of "Impair"

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

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