Overstraon or Overstrain: How To spell?

The word Overstraon is misspelled against Overstrain, a verb meaning "To strain one's self to excess."

Word contains consecutive vowels 'AI' in between alphabets overstr & n is misspelled as 'AO'
Wrong Spelling:  overstr-ao-n 
Correct Spelling:  overstr-ai-n 
Find more incorrect spellings of Overstrain to spell right way.

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