Remove duplicate strings from single cell with line breaks

[darls15]

I'm hoping someone can help with this.

Is there any way to remove (with formula) the duplicate stings from a single cell with strings separated by line breaks?

I've a attached an example of how the output should look.

Many thanks

[tim201110]

with UDF:

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[darls15]

This is perfect and works brilliantly! Thanks so much