Grol or Grail: How To spell?

The word Grol is misspelled against Grail, a noun meaning "A book of offices in the Roman Catholic Church; a gradual."

Word contains consecutive vowels 'AI' in between alphabets gr & l is misspelled as 'O'
Wrong Spelling:  gr-o-l 
Correct Spelling:  gr-ai-l 
Find more incorrect spellings of Grail to spell right way.

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