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Design a context-free grammar for an alphabet, = {a,b,c,d} that generates the language, L={abcmdIn 21. m 21) U {ab0dIn 21, m 21) Show that the

Design a context-free grammar for an alphabet, = {a,b,c,d} that generates the language, L={a"b"cmd"In 21. m 21) U {a"b"0"d"In 21, m 21) Show that the grammar you designed is ambiguous by giving two different parse trees for some string in the language

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