I have the following production rules \begin{align*} R\rightarrow XRX|S \\ S \rightarrow aTb|bTa\\ T\rightarrow XTX|X|\epsilon\\X\rightarrow a|b \end{align*}
True or false $T \rightarrow^* T$
I don't see any way T can get to just T by a series of rules transformations.