Question: A string of parentheses is balanced if each left parenthesis, [, has a matching right parenthesis, ]. Find a grammar that generates the set of

A string of parentheses is balanced if each left parenthesis, [, has a matching right parenthesis, ]. Find a grammar that generates the set of balanced strings of parentheses. You need not have space between the parentheses. An example of such a string is [ [ ] ] [ ].

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