Fleeung or Fleeing: How To spell?

The word Fleeung is misspelled against Fleeing, which is present continuous of "Flee"

Word contains consecutive vowels 'EI' in between alphabets fle & ng is misspelled as 'EU'
Wrong Spelling:  fle-eu-ng 
Correct Spelling:  fle-ei-ng 
Check more misspelled words of Fleeing to spell it correct.