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6. (4 points) The following E-BNF is the grammar for a simplified version of LISP. Convert it to a BNF grammar. Note in the following

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6. (4 points) The following E-BNF is the grammar for a simplified version of LISP. Convert it to a BNF grammar. Note in the following {, }, [, , and are meta-symbols of E-BNF, while C, ), and are terminals. -> | (

) I ( ) -> { } -> { | } -> a | b ... | z -> 0 | 1 | ... | 9

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