Malli or Mallei: How To spell?

The word Malli is misspelled against Mallei, which is plural of "Malleus"

Word end with consecutive vowels 'EI' preceded by alphabets 'mall' is misspelled as 'I' as letter 'E' is phonetically ignored
Wrong Spelling:  mall-i 
Correct Spelling:  mall-ei 
Find more wrongly spelled words of Mallei to spell it well.