^start of line
Collthe literal text Coll (case sensitive) i+the literal i (10510 / 1518 / 6916) (case sensitive), repeated at least once
\s+any whitespace character, repeated at least once
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
\ban ASCII word boundary
\d{9}a digit, repeated exactly 9 times
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