\s*any whitespace character, repeated any number of times
\ban ASCII word boundary
Character Class[A-Za-z]{2} {2}matches exactly 2 characters from the set below:
A-Zone character from A (6510) to Z (9010) (case sensitive)
a-zone character from a (9710) to z (12210) (case sensitive)
\d{2}a digit, repeated exactly 2 times
\w*any word character, repeated any number of times
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string