diff --git a/corerouter.tex b/corerouter.tex
index 79cf6f8..40b205b 100644
--- a/corerouter.tex
+++ b/corerouter.tex
@@ -1,4 +1,9 @@
-\subsection{Core Router}
+\subsection{\texttt{Core Router}}
+\begin{verbatim}
+  % not much
+\end{verbatim}
+
+\subsubsection{\texttt{DMZ}}
 \begin{verbatim}
   % not much
 \end{verbatim}
diff --git a/intra.tex b/intra.tex
new file mode 100644
index 0000000..310c54c
--- /dev/null
+++ b/intra.tex
@@ -0,0 +1,9 @@
+\subsection{\texttt{INTRA}}
+\begin{verbatim}
+  % not much
+\end{verbatim}
+
+\subsubsection{Intranet}
+\begin{verbatim}
+  % not much
+\end{verbatim}
diff --git a/publicsw.tex b/publicsw.tex
new file mode 100644
index 0000000..18af7fd
--- /dev/null
+++ b/publicsw.tex
@@ -0,0 +1,9 @@
+\subsection{\texttt{PublicSW}}
+\begin{verbatim}
+  % not much
+\end{verbatim}
+
+\subsubsection{\texttt{VLAN-HOST}}
+\begin{verbatim}
+  % not much
+\end{verbatim}
diff --git a/solution.tex b/solution.tex
index a050870..3695452 100644
--- a/solution.tex
+++ b/solution.tex
@@ -1,2 +1,8 @@
 % include partial *.tex files
 \input{corerouter}
+\newpage
+\input{publicsw}
+\newpage
+\input{staff}
+\newpage
+\input{intra}
diff --git a/staff.tex b/staff.tex
new file mode 100644
index 0000000..867c96e
--- /dev/null
+++ b/staff.tex
@@ -0,0 +1,4 @@
+\subsection{\texttt{STAFF}}
+\begin{verbatim}
+  % not much
+\end{verbatim}