insert n in list x --> append list x to list y --> delete n in list x

I'm trying to insert the number "1" to the list in every position with a for loop and eventually get all possible lists in python.

For Example:

l = ["2","3","6"]

number = "1"

output = [["1","2","3","6"],["2","1","3","6"],["2","3","1","6"],["2","3","6","1"]]

l = ["2","3","6"]
list_of_nrs = []
for index in range(len(l)+1):
    l.insert(index, "1")
    list_of_nrs.append(l)
    del l[index]
print(list_of_nrs)

So I've tried it like the code above me, but the output I get is:

[['2', '3', '6'], ['2', '3', '6'], ['2', '3', '6'], ['2', '3', '6']]

It seems like there is a problem between the append and del function.

source https://stackoverflow.com/questions/69789538/insert-n-in-list-x-append-list-x-to-list-y-delete-n-in-list-x

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