Overstraned or Overstrained: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets overstr & ned is misspelled as 'A'
Wrong Spelling:  overstr-a-ned 
Correct Spelling:  overstr-ai-ned 
Explore spell check of Overstrained to spell without errors.

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