Engreiling or Engrailing: How To spell?

The word Engreiling is misspelled against Engrailing, which is present continuous of "Engrail"

Word contains consecutive vowels 'AI' in between alphabets engr & ling is misspelled as 'EI'
Wrong Spelling:  engr-ei-ling 
Correct Spelling:  engr-ai-ling 
Find more wrongly spelled words of Engrailing to spell it well.

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