\begin{tabular}{ll}
\toprule[1.1pt]
\multicolumn{1}{c}{\textbf{Element in Reinforcement Learning}} &  \multicolumn{1}{c}{\textbf{Counterpart in LLMs}} \\  \midrule
\parbox{4cm}{
Action ($a$)
} & \parbox{7.2cm}{
The possible predicted tokens in the vocabulary of the LLM.
} \\ \midrule
Reward ($R$) &  \\
 &  \\
 &  \\
 &  \\
\bottomrule[1.1pt]
\end{tabular}