Regular Expressions 101

Pro

Non-Capturing Group(?:a|the|one)

1st Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

2nd Alternativethe

thethe literal text the (case sensitive)

3rd Alternativeone

onethe literal text one (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Non-Capturing Group(?:reason|reasons)

1st Alternativereason

reasonthe literal text reason (case sensitive)

2nd Alternativereasons

reasonsthe literal text reasons (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Non-Capturing Group(?:for|of)

1st Alternativefor

forthe literal text for (case sensitive)

2nd Alternativeof

ofthe literal text of (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

(?:a|the|one)\s+(?:reason|reasons)\s+(?:for|of)

New

a reason of
the reason for
one reason for
reason for

a reason of
the reason for
one reason for
reason for