Gren or Grain: How To spell?

The word Gren is misspelled against Grain, a noun meaning "A blade of a sword, knife, etc."

Word contains consecutive vowels 'AI' in between alphabets gr & n is misspelled as 'E'
Wrong Spelling:  gr-e-n 
Correct Spelling:  gr-ai-n 
Explore spell check of Grain to spell without errors.

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