Coutioned or Cautioned: How To spell?

The word Coutioned is misspelled against Cautioned, which is past tense of "Caution"

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