Herinbefore or Hereinbefore: How To spell?

The word Herinbefore is misspelled against Hereinbefore, an adverb meaning "In the preceding part of this (writing, document, book, etc.)."

Word contains consecutive vowels 'EI' in between alphabets her & nbefore is misspelled as 'I' as letter 'E' is phonetically ign
Wrong Spelling:  her-i-nbefore 
Correct Spelling:  her-ei-nbefore 
Find more incorrect spellings of Hereinbefore to spell right way.