^start of line
Non-Capturing Group(?:[\pL\h]+,) +matches at least one character from the set below:
\pLany Unicode letter
\hany horizontal whitespace character
,the literal , (4410 / 548 / 2C16)
\h*any horizontal whitespace character, 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
другой,the literal text другой, (case sensitive) \h*any horizontal whitespace character, repeated any number of times
.+any character (except for line terminators), repeated at least once
$end of line
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