Question: Consider the context free grammar G with = {a, b, c, d} and rules S aSa | b | c | d. How many strings

Consider the context free grammar G with = {a, b, c, d} and rules S aSa | b | c | d. How many strings in L(G) are of length less than or equal to 39? HINT: You'll notice that there are exactly three strings in L(G) of each odd length.

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