diff --git a/is/ub8/is8.pdf b/is/ub8/is8.pdf
index 78a66e0..672e213 100644
--- a/is/ub8/is8.pdf
+++ b/is/ub8/is8.pdf
Binary files differ
diff --git a/is/ub8/is8.tex b/is/ub8/is8.tex
index 907ed54..7fb53d0 100644
--- a/is/ub8/is8.tex
+++ b/is/ub8/is8.tex
@@ -139,10 +139,28 @@
             \item worst case:\\
                 All nodes are dependent of each other, so it has to check all possible subsets (the powerset) for all pairs of nodes:
                 $$\frac{p\cdot (p-1)}{2}\cdot 2^{p-2}\in\mathcal{O}(2^p)$$
+                \begin{tikzpicture}[auto, node distance=2cm]
+                \node[circle, draw] (A) {A};
+                \node[circle, draw] (B) [right of=A] {B};
+                \node[circle, draw] (C) [below of=A] {C};
+                \node[circle, draw] (D) [below of=B] {D};
+
+                \draw (A) -- (B);
+                \draw (A) -- (D);
+                \draw (B) -- (D);
+                \draw (B) -- (C);
+                \draw (C) -- (D);
+                \draw (C) -- (A);
+            \end{tikzpicture}\\
             \item best case:\\
                 first test shows independence, so we need only one test per pair:
                 $$\frac{p\cdot (p-1)}{2}\cdot 1\in\mathcal{O}(p^2)$$
+                \begin{tikzpicture}[auto, node distance=2cm]
+                \node[circle, draw] (A) {A};
+                \node[circle, draw] (B) [right of=A] {B};
+                \node[circle, draw] (C) [below of=A] {C};
+                \node[circle, draw] (D) [below of=B] {D};
+            \end{tikzpicture}\\
         \end{itemize}
-        %TODO Graphs
 \end{document}