# Package cases
# http://ctan.org/tex-archive/macros/latex/contrib/cases
# By astroscion: 2012-02-15
\begin{numcases}#\array,math
\begin{numcases}{left side}#\array,math
\begin{subnumcases}#\array,math
\begin{subnumcases}{left side}#\array,math
\end{subnumcases}
\end{numcases}