regex101: .NET 10.0 (C#) Match Workspace

Pro

^start of line

Character Class[A-Z]

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

Character Class[a-zA-Z]*

*matches any number of 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)

Non-Capturing Group(?:\s+[a-zA-Z]+)*

*repeats the group contents below any number of times:

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

Character Class[a-zA-Z]+

+matches at least one character 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)

'sthe literal text 's (case sensitive)

Negative Lookahead(?!\S)

\Sany character that is not Unicode whitespace

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

25 tokens

Regular Expression

^[A-Z][a-zA-Z]*(?:\s+[a-zA-Z]+)*'s(?!\S)

New

Amarok's Golovin's Road => Amarok's 
Arkouna Dream's Elowin Engel's => Arkouna Dream's 
Arkouna Dream's Elowin Engel's => Arkouna Dream's  (in this case, I added a space after Engel's)
Liubov's Niagara => Liubov's 
Urane Of Watson Lake => nothing
Of the mountain's Dog

Extraction

Amarok's Golovin's Road => Amarok's 
Arkouna Dream's Elowin Engel's => Arkouna Dream's 
Arkouna Dream's Elowin Engel's => Arkouna Dream's  (in this case, I added a space after Engel's)
Liubov's Niagara => Liubov's 
Urane Of Watson Lake => nothing
Of the mountain's Dog