\documentclass[a4paper]{article}

\usepackage{copte}
\usepackage[COP,T1]{fontenc}


\begin{document}

This is just a try to show you the system. 
Please note that I know next to nothing on Coptic itself.
\textcopte{anok \=m per aneg}. Les pronoms \textcopte{anok} et
\textcopte{aneg} d\'erivent de l'ancien pronom ind\'ependant.

C'est juste un essai. 

\begin{copte}
  Alpha Beta

  fei shei
\end{copte}
\end{document}

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