_the literal _ (9510 / 1378 / 5F16)
Positive Lookahead(?=[abc]) athe literal a (9710 / 1418 / 6116) (case sensitive)
bthe literal b (9810 / 1428 / 6216) (case sensitive)
cthe literal c (9910 / 1438 / 6316) (case sensitive)
a?optionally matches the literal a (9710 / 1418 / 6116) (case sensitive)
b?optionally matches the literal b (9810 / 1428 / 6216) (case sensitive)
c?optionally matches the literal c (9910 / 1438 / 6316) (case sensitive)
_the literal _ (9510 / 1378 / 5F16)
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