Regular Expressions 101

Pro

Group 1(one|two|three)

1st Alternativeone

onethe literal text one (case sensitive)

2nd Alternativetwo

twothe literal text two (case sensitive)

3rd Alternativethree

threethe literal text three (case sensitive)

;?optionally matches the literal ; (59₁₀ / 73₈ / 3B₁₆)

Negative Lookahead(?!\1)

\1the text saved by group 1

Group 2(one|two|three)

1st Alternativeone

onethe literal text one (case sensitive)

2nd Alternativetwo

twothe literal text two (case sensitive)

3rd Alternativethree

threethe literal text three (case sensitive)

;?optionally matches the literal ; (59₁₀ / 73₈ / 3B₁₆)

Negative Lookahead(?!\2)

\2the text saved by group 2

Group 3(one|two|three)

1st Alternativeone

onethe literal text one (case sensitive)

2nd Alternativetwo

twothe literal text two (case sensitive)

3rd Alternativethree

threethe literal text three (case sensitive)

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

(one|two|three);?(?!\1)(one|two|three);?(?!\2)(one|two|three)

New

one;two;three
two;one;three
three;two;one
one;one;two
three;one;two
onetwothree
two;one;one