Toing or Toeing: How To spell?

The word Toing is misspelled against Toeing, which is present continuous of "Toe"

Word contains consecutive vowels 'EI' in between alphabets to & ng is misspelled as 'I' as letter 'E' is phonetically ignored
Wrong Spelling:  to-i-ng 
Correct Spelling:  to-ei-ng 
Find more incorrect spellings of Toeing to spell right way.