Prinstruct or Preinstruct: How To spell?

The word Prinstruct is misspelled against Preinstruct, a verb meaning "To instruct previously or beforehand."

Word contains consecutive vowels 'EI' in between alphabets pr & nstruct is misspelled as 'I' as letter 'E' is phonetically igno
Wrong Spelling:  pr-i-nstruct 
Correct Spelling:  pr-ei-nstruct 
Check more misspelled words of Preinstruct to spell it correct.