Contoning or Containing: How To spell?

The word Contoning is misspelled against Containing, which is present continuous of "Contain"

Word contains consecutive vowels 'AI' in between alphabets cont & ning is misspelled as 'O'
Wrong Spelling:  cont-o-ning 
Correct Spelling:  cont-ai-ning 
Find more incorrect spellings of Containing to spell right way.

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