Regular Expressions 101

Pro

^start of line

.*?any character (except for line terminators), repeated any number of times

Group 1([ftY])

Character Class[ftY]

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (case sensitive)

.*?any character (except for line terminators), repeated any number of times

Negative Lookahead(?!\1)

\1the text saved by group 1

Group 2([ftY])

Character Class[ftY]

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (case sensitive)

.*?any character (except for line terminators), repeated any number of times

Negative Lookahead(?!\1|\2)

1st Alternative\1

\1the text saved by group 1

2nd Alternative\2

\2the text saved by group 2

Group 3([ftY])

Character Class[ftY]

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (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

Regular Expression

^.*?([ftY]).*?(?!\1)([ftY]).*?(?!\1|\2)([ftY])

New

15 YstfAWIN25  desired matches ->  Y tf
15 YstfMSIN25  desired matches ->  Y tf
15 Ystf20IN25  desired matches ->  Y tf
15 YstfMYIN25  desired matches ->  f