Overstreoned or Overstrained: How To spell?

The word Overstreoned is misspelled against Overstrained, which is past tense of "Overstrain"

Word contains consecutive vowels 'AI' in between alphabets overstr & ned is misspelled as 'EO'
Wrong Spelling:  overstr-eo-ned 
Correct Spelling:  overstr-ai-ned 
Find more incorrect spellings of Overstrained to spell right way.

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