Cicisbau or Cicisbei: How To spell?

The word Cicisbau is misspelled against Cicisbei, which is plural of "Cicisbeo"

Word ends with consecutive vowels 'EI' preceded by alphabets 'cicisb' is misspelled as 'AU'
Wrong Spelling:  cicisb-au 
Correct Spelling:  cicisb-ei 
Check more misspelled words of Cicisbei to spell it correct.