Regular Expressions 101

^start of line

Group 1([a-zA-Z]{2})?

?repeats the group contents below at most once:

Character Class[a-zA-Z]{2}

{2}matches exactly 2 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\d{6}a digit, repeated exactly 6 times

Group 2(F|L|SDL?)?

?repeats the group contents below at most once:

1st AlternativeF

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

2nd AlternativeL

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

3rd AlternativeSDL?

SDthe literal text SD (case sensitive)

L?optionally matches the literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

$end of line

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

Regular Expression

^([a-zA-Z]{2})?\d{6}(F|L|SDL?)?$

New

CA123456SDL
CA123456
123456

C123456SDL
123456F
123456L
123456SD
123456SDL
123456SDL

CA123456SDL
CA123456
123456

C123456SDL
123456F
123456L
123456SD
123456SDL
123456SDL