[Solved] How to split up elements of a list separated by ],[ in Python

AC123 Asks: How to split up elements of a list separated by ],[ in Python
I have a list that looks like :

Code:
mylist=[[["A","B"],["A","C","B"]],[["A","D"]]]

and I want to return :

Code:
mylist=[["A","B"],["A","C","B"],["A","D"]]

Using the split() function returns an error of :

list object has no attribute split

Therefore, I am unsure how I should split the elements of this list.
Thanks!

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