Sprining or Spraining: How To spell?

The word Sprining is misspelled against Spraining, which is present continuous of "Sprain"

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

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