Question: Construct a context - free grammar that generates the following language: L = { wwR : w in ( a U b ) * }

Construct a context-free grammar that generates the following language:
L ={wwR : w in (a U b)*}
Yantnz:
S -> aSa | bSb | a
S -> aSa | bSb
S -> aSb | bSa |\epsi
S -> aSa | bSb | b
S -> aSa | bSb |\epsi

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