^start of line
\w+a Unicode word character, repeated at least once
Non-Capturing Group(?: \w+)* *repeats the group contents below any number of times:
the literal (3210 / 408 / 2016)
\w+a Unicode word character, repeated at least once
,the literal , (4410 / 548 / 2C16)
\w+a Unicode word character, repeated at least once
,the literal , (4410 / 548 / 2C16)
.*any Unicode character (except for line terminators), repeated any number of times
$end of line
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