Raumbursing or Reimbursing: How To spell?

The word Raumbursing is misspelled against Reimbursing, which is present continuous of "Reimburse"

Word contains consecutive vowels 'EI' in between alphabets r & mbursing is misspelled as 'AU'
Wrong Spelling:  r-au-mbursing 
Correct Spelling:  r-ei-mbursing 
Check more misspelled words of Reimbursing to spell it correct.