🚀 go-pugleaf

the following attempt was to have something that looked like:
                    { a }      { a' }
blah blah blah ...  { b }  or  { b' }
                    { c }      { c' }

unfortunately what i got was:

blah blah blah ...
                    { a }
                    { b }
                    { c }
or
                    { a' }
                    { b' }
                    { c' }

any ideas on how to fix that?  thanks
gill



\begin{enumerate}
  \item[$F_{3}$.\ ] If $\zeta \in P_{CN}$ and $\phi \in P_{t}$,
             then $F_{3}(\zeta,\phi) = \zeta$ {\bf such that} $\phi^{m}$,
             where $\phi^{m}$ comes from $\phi$ by replacing each occurance of
             {\bf $he_{n}$} or {\bf $him_{n}$} by \[ \left\{ \begin{array}{l} {\bf he} \\
             {\bf she} \\ {\bf it} \end{array} \right\} \] or \[ \left\{ \begin{array}{l}
             {\bf him} \\ {\bf her} \\ {\bf it} \end{array} \right\} \] respectively,
             according as the first $B_{CN}$ in $\zeta$ is of \[ \left\{ \begin{array}{l} masc. \\
             fem. \\ neuter \end{array} \right\} \] gender.
\end{enumerate}