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Pattern
(?>(?=[1468](?<4>)|)(?=[2569](?<4>){2}|)([3-6]()|\d))+
Input
21
21
Options
Ignore Case
Ignore Whitespace
Explicit Capture
Culture Invariant
Singleline
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Right To Left
ECMA Script
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Regex Info
Table
Context
Split List
1
match found in about
1
millisecond.
Show Permalink
Permalink
Index
Position
Matched String
$1
$2
$4
0
0
21
1
2 captures
2
1
empty string
empty string
21
empty string
1
empty string
empty string
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