Overstrauning or Overstraining: How To spell?

The word Overstrauning is misspelled against Overstraining, which is present continuous of "Overstrain"

Word contains consecutive vowels 'AI' in between alphabets overstr & ning is misspelled as 'AU'
Wrong Spelling:  overstr-au-ning 
Correct Spelling:  overstr-ai-ning 
Check more misspelled words of Overstraining to spell it correct.

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