Sed or Seid: How To spell?

The word Sed is misspelled against Seid, a noun meaning "A descendant of Mohammed through his daughter Fatima and nephew Ali."

Word contains consecutive vowels 'EI' in between alphabets s & d is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  s-e-d 
Correct Spelling:  s-ei-d 
Explore spell check of Seid to spell without errors.