Positive Lookbehind(?<=\s) \sany whitespace character
\d+a digit, repeated at least once
Non-Capturing Group(?:,\d+)? ?repeats the group contents below at most once:
,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least once
\s+any whitespace character, repeated at least once
Xthe literal X (8810 / 1308 / 5816) (case sensitive)
\s+any whitespace character, repeated at least once
\d+a digit, repeated at least once
Non-Capturing Group(?:,\d+)? ?repeats the group contents below at most once:
,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least once
\s+any whitespace character, repeated at least once
Xthe literal X (8810 / 1308 / 5816) (case sensitive)
\s+any whitespace character, repeated at least once
\d+a digit, repeated at least once
Non-Capturing Group(?:,\d+)? ?repeats the group contents below at most once:
,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least 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