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\PY{n+nv}{c}\PY{l+s}{ }\PY{esc}{$\mapsto$}\PY{l+s}{ }\PY{l}{true}\PY{l+s}{ }\PY{esc}{$\sep$}\PY{l+s}{ }\PY{p}{[}\PY{g+gr}{]}
\PY{n+nv}{x}\PY{l+s}{ }\PY{esc}{$\mapsto$}\PY{l+s}{ }\PY{n+nf}{mkvar}\PY{p}{(}\PY{o}{\PYZhy{}}\PY{l+m}{10}\PY{o}{..}\PY{l+m}{10}\PY{g+gr}{)}\PY{l+s}{ }\PY{esc}{$\sep$}\PY{l+s}{ }\PY{p}{[}\PY{g+gr}{]}
\PY{n+nv}{y}\PY{l+s}{ }\PY{esc}{$\mapsto$}\PY{l+s}{ }\PY{n+nf}{mkvar}\PY{p}{(}\PY{o}{\PYZhy{}}\PY{l+m}{10}\PY{o}{..}\PY{l+m}{10}\PY{g+gr}{)}\PY{l+s}{ }\PY{esc}{$\sep$}\PY{l+s}{ }\PY{p}{[}\PY{g+gr}{]}
\PY{l}{true}\PY{l+s}{ }\PY{esc}{$\mapsto$}\PY{l+s}{ }\PY{l}{true}\PY{l+s}{ }\PY{esc}{$\sep$}\PY{l+s}{ }\PY{p}{[}\PY{g+gr}{]}
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