.*any character (except for line terminators), repeated any number of times
{0,3}matches between 0 and 3 characters from the set below:
\na line-feed (newline) character (ASCII 10)
.*any character (except for line terminators), repeated any number of times
DHLthe literal text DHL (case insensitive) .*any character (except for line terminators), repeated any number of times
Retourethe literal text Retoure (case insensitive)