Alvay or Alvei: How To spell?

The word Alvay is misspelled against Alvei, which is plural of "Alveus"

Word ends with consecutive vowels 'EI' preceded by alphabets 'alv' is misspelled as 'AY'
Wrong Spelling:  alv-ay 
Correct Spelling:  alv-ei 
Browse incorrect spellings of Alvei to spell it good.