Could someone explain me how to form a context-free grammar with all rules R by this example language, please? \begin{equation} L:=\left\{w c v c \overleftarrow{w} | w, v \in\{a, b\}^{+}\right\} \end{equation} The arrow over w means, that the word w is written backwards.
I already know that \begin{equation} \Sigma=\{a, b, c\} \end{equation} and V (non terminal symbols) maybe have to be \begin{equation} V=\{S, A, B, C\} \end{equation}
Thank you for helping.