  \begin{document}
  \begin
  This paper continues work of the earlier articles with the same title. For
two classes of modular forms $f$:
  \begin{itemize}
  \item para-Eisenstein series $\alpha_{k}$ and
  \item coefficient forms ${}_a \ell_{k}$, where $k \in \mathbb{N}$ and $a$ is
a non-constant element of $\mathbb{F}_{q}[T]$,
  \end{itemize}
  the growth behavior on the fundamental domain and the zero loci $\Omega(f)$
  as well as their images $\mathcal{BT}(f)$ in the Bruhat-Tits building
$\mathcal{BT}$ are studied. We obtain a complete description for $f =
\alpha_{k}$ and for those of the forms
  ${}_{a}\ell_{k}$ where $k \leq \deg a$. It turns out that in these cases,
$\alpha_{k}$ and ${}_{a}\ell_{k}$ are strongly related, e.g.,
$\mathcal{BT}({}_{a}\ell_{k}) = \mathcal{BT}(\alpha_{k})$, and that
  $\mathcal{BT}(\alpha_{k})$ is the set of $\mathbb{Q}$-points of a full
subcomplex of $\mathcal{BT}$ with nice properties. As a case study, we present
in detail the outcome for the forms
  $\alpha_{2}$ in rank 3. \end{abstract}
  \maketitle
  \end{document}
