\w+a Unicode word character, repeated at least once
:the literal : (5810 / 728 / 3A16)
.*?any Unicode character (except for line terminators), repeated any number of times
\ba Unicode word boundary
\d+a Unicode decimal digit, repeated at least once
Non-Capturing Group(?:\.\d+) \.the literal . (4610 / 568 / 2E16)
\d+a Unicode decimal digit, repeated at least once
Positive Lookahead(?=,|$) ,the literal , (4410 / 548 / 2C16)
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