[user]

hello

I have many lines like this:

a, b, c
a, c, b
a, b, c, d
a, c, b, d

for my project, if a line contains the same letters (a, b, c, etc) but in different order, it is the same and should be deleted (one of them)

for example:
a, b, c
and
a, c, b
are the same, so one of them should be removed

how can I remove these?

thanks!

[Author]

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