+repeats the group contents below at least once:
,the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times
\w+any word character, repeated at least once
Non-Capturing Group(?:\s+and\s+\w+)? ?repeats the group contents below at most once:
\s+any whitespace character, repeated at least once
andthe literal text and (case sensitive) \s+any whitespace character, repeated at least once
\w+any word character, repeated at least once