Atteyning or Attaining: How To spell?

The word Atteyning is misspelled against Attaining, which is present continuous of "Attain"

Word contains consecutive vowels 'AI' in between alphabets att & ning is misspelled as 'EY'
Wrong Spelling:  att-ey-ning 
Correct Spelling:  att-ai-ning 
Find more wrongly spelled words of Attaining to spell it well.

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