Home
Tester
Reference
About
Pattern
(?<=\1(.)).
Input
aa
b
cc
d
efghh
i
j
aabccdefghhij
Options
Ignore Case
Ignore Whitespace
Explicit Capture
Culture Invariant
Singleline
Multiline
Right To Left
ECMA Script
Start from position:
Max matches to find:
Replacement
Replace matches with...
Click the
context
tab to see replacements.
Regex Info
Table
Context
Split List
3
matches found in about
3
milliseconds.
Show Permalink
Permalink
Index
Position
Matched String
$1
0
2
b
a
1
5
d
c
2
11
i
h
aa
b
cc
d
efghh
i
j
aa
a
cc
c
efghh
h
j
Regex Storm © 2010 - 2024 Will Boyd
Twitter: