\(?optionally matches the literal ( (4010 / 508 / 2816)
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
A-Zone character from A (6510) to Z (9010) (case sensitive)
a-zone character from a (9710) to z (12210) (case sensitive)
_the literal _ (9510 / 1378 / 5F16)
\w*any word character, repeated any number of times