Toutologizing or Tautologizing: How To spell?

The word Toutologizing is misspelled against Tautologizing, which is present continuous of "Tautologize"

Word contains consecutive vowels 'AU' in between alphabets t & tologizing is misspelled as 'OU'
Wrong Spelling: t-ou-tologizing
Correct Spelling: t-au-tologizing
Check more misspelled words of Tautologizing to spell it correct.