Tavtology or Tautology: How To spell?

The word Tavtology is misspelled against Tautology, meaning "a repetition a redundancy"

Word contains consecutive vowels 'AU' in between alphabets t & tology is misspelled as 'AV'
Wrong Spelling: t-av-tology
Correct Spelling: t-au-tology
Find more incorrect spellings of Tautology to spell right way.