after sorted from the lists

[jepler at unpythonic.net]

>>> ll = [[1,2],[2,1],[3,1],[1,4],[3,3],[1,4]]
>>> ls = [frozenset(i) for i in ll]
>>> ss = set(ls)
>>> ss
set([frozenset([1, 3]), frozenset([1, 2]), frozenset([1, 4]), frozenset([3])])
>>> [list(i) for i in ss]
[[1, 3], [1, 2], [1, 4], [3]]
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