Question: Balanced parentheses and brackets, where a closing bracket also closes any outstanding open parentheses ( up to the previous open bracket ) . Example: [

Balanced parentheses and brackets, where a closing bracket also closes
any outstanding open parentheses (up to the previous open bracket).
Example: [([](()[(][])]. Hint: First, make the language of balanced
parentheses and brackets, where extra open parentheses are allowed;
then make sure this nonterminal must appear within brackets.

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