Countervoling or Countervailing: How To spell?

The word Countervoling is misspelled against Countervailing, which is present continuous of "Countervail"

Word contains consecutive vowels 'AI' in between alphabets counterv & ling is misspelled as 'O'
Wrong Spelling:  counterv-o-ling 
Correct Spelling:  counterv-ai-ling 
Check more misspelled words of Countervailing to spell it correct.

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