Inreoling or Inrailing: How To spell?

The word Inreoling is misspelled against Inrailing, which is present continuous of "Inrail"

Word contains consecutive vowels 'AI' in between alphabets inr & ling is misspelled as 'EO'
Wrong Spelling:  inr-eo-ling 
Correct Spelling:  inr-ai-ling 
Find more incorrect spellings of Inrailing to spell right way.

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