%\begin{equation}\label{eq:0123-122-1(lex)}
\begin{figure}[h!]
\begin{center}
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%
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%
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%
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%
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;
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%
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%
%
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%
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%
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%
\begin{scope}[xshift=18cm,yshift=0cm]
\clip(3,0,0)--(3,4,0)--(0,4,0)--(0,4,1)--(0,3,1)--(1,3,1)--(1,3,2)--(1,2,2)--(1,1,2)--(2,1,2)--(2,0,2)--(3,0,2)--(3,0,0)--cycle;
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;
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;
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;
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(2,2,1)--(2,3,1)--(2,3,2)--(2,2,2)--cycle
;
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(1,3,1)--(1,3,2)--(2,3,2)--(2,3,1)--cycle
(0,4,0)--(0,4,1)--(1,4,1)--(1,4,0)--cycle
;
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\end{scope}
\end{scope}
\end{tikzpicture}
\end{center}
\caption{}
\label{fig:pic_0123-122-1(lex)}
\end{figure}
%\end{equation}