Question: ( h ) Given context - free grammars for languages L 1 and L 2 with start variables S 1 and S 2 respectively. Give

(h) Given context-free grammars for languages L1 and L2 with start variables S1 and S2 respectively. Give the grammar for L1\cup L2, the grammar for L1 L2,(the concatenation), and the grammar for L.

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