Oh honey, day ONE of learning regex and you're already staring at what looks like ancient Egyptian hieroglyphics? That's not a bug, that's a feature! Regex is literally the only thing in programming where you write something, it works, and you STILL have absolutely no idea what you just wrote. It's like summoning a demon—you follow the arcane symbols, whisper the magic incantations of (?<=\w)\d+(?=\s) , and pray to the coding gods it does what you want. Five minutes after writing it? Completely illegible. Even to YOU. The person who JUST wrote it. Egyptian hieroglyphics are honestly more readable at this point—at least those have a Rosetta Stone!