Treeyng or Treeing: How To spell?

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

Word contains consecutive vowels 'EI' in between alphabets tre & ng is misspelled as 'EY'
Wrong Spelling:  tre-ey-ng 
Correct Spelling:  tre-ei-ng 
Explore spell check of Treeing to spell without errors.