cthe literal c (9910 / 1438 / 6316) (case sensitive)
.{0,2}?any character (except for line terminators), repeated between 0 and 2 times
mthe literal m (10910 / 1558 / 6D16) (case sensitive)
.{0,2}?any character (except for line terminators), repeated between 0 and 2 times
g modifier: global. Finds all matches instead of stopping after the first