{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
    ;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
    ;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
    ;}\begin{tikzpicture}[auto]
    \matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
      \nodea  \\ 
      \nodeb  \\ 
      \nodec  \\
    };
    
    \path[ultra thick, red] (b) edge (c)
    (a) edge (b);
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\scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$1$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\ 
 \nodec  \\
};

\path[ultra thick, red] (b) edge (c)
	(a) edge (b);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
         \& \nodea  \&         \\ 
 \nodeb  \&         \& \nodec  \\
};

\path[ultra thick, red] (a) edge (b) edge (c);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\
};

\path[ultra thick, red] (a) edge (b);
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\
};

\path[ultra thick, red] (a) edge (b);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$[0]$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\ 
 \nodec  \\
};

\path[ultra thick, red] (b) edge (c)
	(a) edge (b);
\end{tikzpicture}}
\scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$[0]$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
         \& \nodea  \&         \\ 
 \nodeb  \&         \& \nodec  \\
};

\path[ultra thick, red] (a) edge (b) edge (c);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$[0]$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\
};

\path[ultra thick, red] (a) edge (b);
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$[0]$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\ 
 \nodec  \\
};

\path[ultra thick, red] (b) edge (c)
	(a) edge (b);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$1$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$[0]$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\ 
 \nodec  \\
};

\path[ultra thick, red] (b) edge (c)
	(a) edge (b);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\
};
\end{tikzpicture}}, { \newcommand{\nodea}{\node[draw,circle] (a) {$[0]$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\
};

\path[ultra thick, red] (a) edge (b);
\end{tikzpicture}}
  \scalebox{2}{;}
{ \newcommand{\nodea}{\node[draw,circle] (a) {$[0]$}
;}\newcommand{\nodeb}{\node[draw,circle] (b) {$[0]$}
;}\newcommand{\nodec}{\node[draw,circle] (c) {$0$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&]{
 \nodea  \\ 
 \nodeb  \\ 
 \nodec  \\
};

\path[ultra thick, red] (b) edge (c)
	(a) edge (b);
\end{tikzpicture}}