Heilstorm or Hailstorm: How To spell?

The word Heilstorm is misspelled against Hailstorm, a noun meaning "A storm accompanied with hail; a shower of hail."

Word contains consecutive vowels 'AI' in between alphabets h & lstorm is misspelled as 'EI'
Wrong Spelling:  h-ei-lstorm 
Correct Spelling:  h-ai-lstorm 
Find more incorrect spellings of Hailstorm to spell right way.

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