Caationed or Cautioned: How To spell?

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

Word contains consecutive vowels 'AU' in between alphabets c & tioned is misspelled as 'AA'
Wrong Spelling: c-aa-tioned
Correct Spelling: c-au-tioned
Find more incorrect spellings of Cautioned to spell right way.