regex101: PCRE (Legacy) Substitution Workspace

Pro

^start of line

Non-Capturing Group(?:.*?\b(.+?)\1(?=\b|\p{Lu}))*

*repeats the group contents below any number of times:

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

\ban ASCII word boundary

Group 1(.+?)

.+?any character (except for line terminators), repeated at least once

\1the text saved by group 1

Positive Lookahead(?=\b|\p{Lu})

1st Alternative\b

\ban ASCII word boundary

2nd Alternative\p{Lu}

\p{Lu}an uppercase letter

\s*any whitespace character, repeated any number of times

Group 2(.*)

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

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

^(?:.*?\b(.+?)\1(?=\b|\p{Lu}))*\s*(.*)

New

Lil' SlimLil' Slim feat. PxMxWxPxMxWx Where Your Ward At!!
I Like It (Mannie Fresh Style)I Like It (Mannie Fresh Style)Ms. Tee
Bella VistaBella Vista Mister Wong
Tom WareTom WareChina Town
Race 'N RhythmRace 'N Rhythm Teenage Girls
Ronald MarquisseRonald MarquisseElectro Link 7
PleasurePleasure Thoughts Of Old Flames
OM, OM, Dom Um RomaoDom Um Romao Chipero

Extraction

Lil' SlimLil' Slim feat. PxMxWxPxMxWx Where Your Ward At!!
I Like It (Mannie Fresh Style)I Like It (Mannie Fresh Style)Ms. Tee
Bella VistaBella Vista Mister Wong
Tom WareTom WareChina Town
Race 'N RhythmRace 'N Rhythm Teenage Girls
Ronald MarquisseRonald MarquisseElectro Link 7
PleasurePleasure Thoughts Of Old Flames
OM, OM, Dom Um RomaoDom Um Romao Chipero