\begin{tikzpicture}
  \matrix (m) [left delimiter=[,right delimiter={]},matrix of math nodes]
  {
    \textsc{mud} & \left\{\left[\textit{pl}\right]\right\} \\
    \textsc{ms}  & \textit{set} \\
    \textsc{mph} & 
      \left\{
        \begin{bmatrix}
          \textsc{ph} & \left< \textrm{s} \right> \\
          \textsc{pc} & 2\vee 3
        \end{bmatrix}
      \right\}
     \\
  };
\end{tikzpicture}

%%% Local Variables:
%%% mode: latex
%%% TeX-master: "../../morphology"
%%% End:
