Interraegn or Interreign: How To spell?

The word Interraegn is misspelled against Interreign, a noun meaning "An interregnum."

Word contains consecutive vowels 'EI' in between alphabets interr & gn is misspelled as 'AE'
Wrong Spelling:  interr-ae-gn 
Correct Spelling:  interr-ei-gn 
Explore spell check of Interreign to spell without errors.