after sorted from the lists

[Ben Bush]

I have a list:
[[1,2],[2,1],[3,1],[1,4],[3,3],[1,4]]
How to remove all the duplicate or same after sorted from the lists?
That is, [1,2] and [2,1] are the same after sorting them.
I want the result to be:
[[1,2],[3,1],[1,4],[3,3]]
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