Coutioning or Cautioning: How To spell?

The word Coutioning is misspelled against Cautioning, which is present continuous of "Caution"

Word contains consecutive vowels 'AU' in between alphabets c & tioning is misspelled as 'OU'
Wrong Spelling:  c-ou-tioning 
Correct Spelling:  c-au-tioning 
Check more misspelled words of Cautioning to spell it correct.

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