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- \begin{scope}[node distance=0.75cm]
-
- \node (FGX) [color=blue,inner xsep=0.01cm, inner ysep=0.03cm] at (0, 0) {@};
- \node (FG) [color=blue,xshift=0.25cm, inner xsep=0.01cm, inner ysep=0.03cm, below of=FGX, left of=FGX] {@};
- \node (X) [xshift=-0.25cm, inner xsep=0.01cm, inner ysep=0.03cm, below of=FGX, right of=FGX] {y};
- \node (F) [color=blue,xshift=0.25cm, inner xsep=0.04cm, inner ysep=0.05cm, below of=FG, left of=FG, xshift=2] {f};
- \node (G) [xshift=-0.25cm, inner xsep=0.01cm, inner ysep=0.03cm, below of=FG, right of=FG, xshift=-2] {x};
-
- \draw[->] (FGX) to (X);
- \draw[->,color=blue] (FGX) to (FG);
- \draw[->,color=blue] (FG) to (F.north east);
- \draw[->] (FG) to (G.north west);
-
- \end{scope}
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