I want to make a permutation of a word, for example 1 2 3 it should return 1 2 3 1 3 2 2 1 3 2 3 1 3 1 2 3 2 1
or
(list (list 1 2 3)
(list 1 3 2)
.
.
.
Could you help me with this?
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