Question: Problem 3. Consider the grammar A B C D | D C B B b B c | c B | b | C c

Problem 3. Consider the grammar A B C D | D C B B b B c | c B | b | C c C d | c D d D c | b C where A, B, C, and D are non-terminal, A is the start symbol and b, c and d are tokens. Remember that represents the empty sequence. Y means that Y does not have to match any tokens or, equivalently, it matches an empty sequence of tokens. 1. Give a parse tree for the sequence of tokens: b c c b c c b c 2. Give a another (different) parse tree for the sequence of tokens: b c c b c c b c 3. Is this grammar ambiguous? Why?

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