Sthe literal S (8310 / 1238 / 5316) (case insensitive)
?repeats the group contents below at most once:
idethe literal text ide (case insensitive) ?matches at most one character from the set below:
\Wany character that is not a Unicode word character
_the literal _ (9510 / 1378 / 5F16)
Bthe literal B (6610 / 1028 / 4216) (case insensitive)
?repeats the group contents below at most once:
ythe literal y (12110 / 1718 / 7916) (case insensitive)
.?optionally matches any Unicode character (except for line terminators)
Sthe literal S (8310 / 1238 / 5316) (case insensitive)
?repeats the group contents below at most once:
idethe literal text ide (case insensitive)