Treaung or Treeing: How To spell?

The word Treaung is misspelled against Treeing, which is present continuous of "Tree"

Word contains consecutive vowels 'EI' in between alphabets tre & ng is misspelled as 'AU'
Wrong Spelling:  tre-au-ng 
Correct Spelling:  tre-ei-ng 
Check more misspelled words of Treeing to spell it correct.