Piaung or Pieing: How To spell?

The word Piaung is misspelled against Pieing, which is present continuous of "Pi"

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