\w+any word character, repeated at least once
the literal (3210 / 408 / 2016)
\(the literal ( (4010 / 508 / 2816)
Non-Capturing Group(?:[1-9]|[1234][0-9]) 1-9one character from 1 (4910) to 9 (5710)
2nd Alternative[1234][0-9] 1the literal 1 (4910 / 618 / 3116)
2the literal 2 (5010 / 628 / 3216)
3the literal 3 (5110 / 638 / 3316)
4the literal 4 (5210 / 648 / 3416)
0-9one character from 0 (4810) to 9 (5710)
\)the literal ) (4110 / 518 / 2916)
Non-Capturing Group(?:, )? ?repeats the group contents below at most once:
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