Does subsections have limit in the IEEEtran document class?

Question

Note: I've asked a similar question to this one before: Does subfigure package have a limit of subfigures within a figure?. To be honest, it is pretty much the same situation, but the solution can not be applied as before in this case.

MWE

\documentclass{IEEEtran}

\begin{document}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\end{document}

Explanation & Question

When the MWE I created is compiled, it will return the error LaTeX Error: Counter too large, but if one of the \subsection{} lines is deleted, the document will be created with no problem. The issue is that when letter 'Z' is reached in the subsections counter, it cannot go further.

• How can this be fixed (The idea is for the counter to be A, B, C, ..., AA, AB, AC, ..., BA, BB, BC, ..., AAA, AAB, AAC, ..., ABA, ABB, ABC, ...) ?

Answer 1

Since the subsection counter is represented alphabetically, more than 26 subsections will trigger the mentioned error. You can prevent this using the alphalph package:

\documentclass{IEEEtran}
\usepackage{alphalph}

\renewcommand\thesubsectiondis{\AlphAlph{\value{subsection}}.}% for the headings in the text
\renewcommand\thesubsection{\mbox{\thesection-\AlphAlph{\value{subsection}}}}% for the ToC, for example     

\begin{document}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\subsection{}
\end{document}