\begin{Verbatim}[commandchars=\\\{\}]
\PYG{o}{\PYGZsh{}}\PYG{n+nv}{lang}\PYG{+w}{ }\PYG{n+nv}{racket}

\PYG{c+c1}{;; a cons pair of two numbers}
\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{1}\PYG{+w}{ }\PYG{l+m+mi}{2}\PYG{p}{)}

\PYG{c+c1}{;; a list of 3 numbers using only the cons function}
\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{1}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{2}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{3}\PYG{+w}{ }\PYG{n+nv}{empty}\PYG{p}{)))}\PYG{+w}{   }

\PYG{c+c1}{;; a list containing a string, a number, and a nested list of three numbers using only the cons function}
\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+s}{\PYGZdq{}a string\PYGZdq{}}
\PYG{+w}{    }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{0}\PYG{+w}{ }
\PYG{+w}{        }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{1}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{2}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{cons}\PYG{+w}{ }\PYG{l+m+mi}{3}\PYG{+w}{ }\PYG{n+nv}{empty}\PYG{p}{)))}\PYG{+w}{ }\PYG{n+nv}{empty}\PYG{p}{)}
\PYG{+w}{    }\PYG{p}{)}
\PYG{p}{)}

\PYG{c+c1}{;; a list containing a string, a number, and a nested list of three numbers, using only the list function}
\PYG{p}{(}\PYG{n+nb}{list}\PYG{+w}{ }\PYG{l+s}{\PYGZdq{}a string\PYGZdq{}}\PYG{+w}{ }\PYG{l+m+mi}{0}\PYG{+w}{ }\PYG{p}{(}\PYG{n+nb}{list}\PYG{+w}{ }\PYG{l+m+mi}{1}\PYG{+w}{ }\PYG{l+m+mi}{2}\PYG{+w}{ }\PYG{l+m+mi}{3}\PYG{p}{))}

\PYG{c+c1}{;; a list containing a string, a number, and a nested list of three numbers, using only the append function}
\PYG{p}{(}\PYG{n+nb}{append}\PYG{+w}{ }\PYG{o}{\PYGZsq{}}\PYG{p}{(}\PYG{l+s}{\PYGZdq{}a string\PYGZdq{}}\PYG{p}{)}\PYG{+w}{ }\PYG{o}{\PYGZsq{}}\PYG{p}{(}\PYG{l+m+mi}{0}\PYG{p}{)}\PYG{+w}{ }\PYG{o}{\PYGZsq{}}\PYG{p}{((}\PYG{l+m+mi}{1}\PYG{+w}{ }\PYG{l+m+mi}{2}\PYG{+w}{ }\PYG{l+m+mi}{3}\PYG{p}{)))}
\end{Verbatim}