Letters in mixed case means using "UPPER CASE" and "lower case" as well as "numb3rs"

For example, my name using upper case, lower case, and numbers... "k31RoN"

Ok thanks. :)

must include letters in mixed case and numbers

must be different than the previous 5 passwords
must be at least 6 characters
must be different from email address
must include letters in mixed case and numbers
must include a character that is not a letter or number

ANY BODY HELP ME ABOUT THIS MATTER? THNAKS