Syignioral or Seignioral: How To spell?

The word Syignioral is misspelled against Seignioral, an adjective meaning "pertaining to a seigni; seigneurial."

Word contains consecutive vowels 'EI' in between alphabets s & gnioral is misspelled as 'YI'
Wrong Spelling:  s-yi-gnioral 
Correct Spelling:  s-ei-gnioral 
Find more incorrect spellings of Seignioral to spell right way.