Remove duplicate using regex jquery -


i've below text in file.

10 - black 10 - black 10 - black 10 - black 10 - black 20 - grey/black 20 - grey/black 20 - grey/black 20 - grey/black 20 - grey/black 30 - blue 30 - blue 30 - blue 30 - blue 30 - blue 40 - brown/red 40 - brown/red 40 - brown/red 40 - brown/red 40 - brown/red

here want replace following duplicates, remain letter below is.

in simple want output below.

10 - black     20 - grey/black     30 - blue     40 - brown/red

here's regex code: (\b[^\n,]+)\n(?=.*\b\1\b) regex101: https://regex101.com/r/wf0ag1/1

edit 1

try regex:

([^\n].*)\n(?:\1(?:\n|$))*

and substitution:

$1\n\n\n

demo


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