\begin{Verbatim}[commandchars=\\\{\}]
\PYG{n}{expect\PYGZus{}freq} \PYG{o}{=} \PYG{p}{\PYGZob{}}\PYG{l+s+s2}{\PYGZdq{}A\PYGZdq{}}\PYG{p}{:} \PYG{l+m+mf}{0.3}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}G\PYGZdq{}}\PYG{p}{:} \PYG{l+m+mf}{0.2}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}T\PYGZdq{}}\PYG{p}{:} \PYG{l+m+mf}{0.3}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}C\PYGZdq{}}\PYG{p}{:} \PYG{l+m+mf}{0.2}\PYG{p}{\PYGZcb{}}
\end{Verbatim}
