Home
Tester
Reference
About
Pattern
(?!^)(?<!^.{4}).
Input
U
s
e
r
F
i
r
s
t
N
a
m
e
UserFirstName
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
11
matches found in about
5
milliseconds.
Show Permalink
Permalink
Index
Position
Matched String
Replacement
0
1
s
*
1
2
e
*
2
3
r
*
3
5
i
*
4
6
r
*
5
7
s
*
6
8
t
*
7
9
N
*
8
10
a
*
9
11
m
*
10
12
e
*
U
*
*
*
F
*
*
*
*
*
*
*
*
U
empty string
empty string
F
empty string
empty string
empty string
empty string
empty string
empty string
empty string
empty string
Regex Storm © 2010 - 2024 Will Boyd
Twitter: