Regular Expressions 101

Pro

\ban ASCII word boundary

Group 1(\w+)

\w+any word character, repeated at least once

\ban ASCII word boundary

Group 2(.*\b\1\b){3}

{3}repeats the group contents below exactly 3 times:

.*any character (except for line terminators), repeated any number of times

\ban ASCII word boundary

\1the text saved by group 1

\ban ASCII word boundary

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

\b(\w+)\b(.*\b\1\b){3}

New

a a a b b e e e
o o o o p p p y y y
w r r r u u i i o o r
x x o o i i p p z z y y