^start of line
.*any character (except for line terminators), repeated any number of times
itemthe literal text item (case sensitive) .*any character (except for line terminators), repeated any number of times
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
\ban ASCII word boundary
polthe literal text pol (case sensitive) .+?any character (except for line terminators), repeated at least once
\ban ASCII word boundary
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