Overseyng or Overseeing: How To spell?

The word Overseyng is misspelled against Overseeing, which is present continuous of "Oversee"

Word contains consecutive vowels 'EI' in between alphabets overse & ng is misspelled as 'Y'
Wrong Spelling:  overse-y-ng 
Correct Spelling:  overse-ei-ng 
Explore spell check of Overseeing to spell without errors.