Build, test, and debug regular expressions
This regular expression uses positive lookaheads to match lines that contain the words "axis", "regular", and "bluechip" anywhere within them. The word boundary \b ensures it matches these exact words rather than substrings. It operates globally, across multiple lines, and is case-insensitive. It is commonly used for filtering log files, searching through text, or validating strings where specific multiple keywords must be present regardless of their order.