Attuning or Attaining: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets att & ning is misspelled as 'U'
Wrong Spelling: att-u-ning
Correct Spelling: att-ai-ning
Check more misspelled words of Attaining to spell it correct.