.*?any character (except for line terminators), repeated any number of times
\ban ASCII word boundary
PATTERNthe literal text PATTERN (case sensitive) Non-Capturing Group(?:\h+\H+){2} {2}repeats the group contents below exactly 2 times:
\h+any horizontal whitespace character, repeated at least once
\H+any character that's not a horizontal whitespace character, repeated at least once
\h+any horizontal whitespace character, repeated at least once
\S+any non-whitespace character, repeated at least once
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