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To answer this, follow the definitions. From Wikipedia (see further references there): The language of a grammar is the set of sentences it builds. A sentence is a sentential form that contains no nonterminals. A sentential form is a member of (Σ ∪ N)*. Σ are terminal symbols, here ∅. N are nonterminal symbols, here {S, A}. Working our way up this list ...


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