Positive Lookbehind(?<=A) Athe literal A (6510 / 1018 / 4116) (case sensitive)
.*any character (except for line terminators), repeated any number of times
cthe literal c (9910 / 1438 / 6316) (case sensitive)
.*any character (except for line terminators), repeated any number of times
Bthe literal B (6610 / 1028 / 4216) (case sensitive)
g modifier: global. Finds all matches instead of stopping after the first