+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{myclass}[]
+
+%% Just use the original class and pass the options
+\LoadClassWithOptions{scrreprt}
+% report, book, memoir, scrreprt or scrbook ?
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Based on ideas from https://bugs.debian.org/684772
+\usepackage{titlesec}
+%
+% Useless with unnumbered sections (e.g. use of \setcounter{secnumdepth}{0})
+%
+%
+\newcommand\makeletterof[1]{%
+\ifthenelse{\equal{#1}{1}}{EN}{%
+\ifthenelse{\equal{#1}{2}}{TO}{%
+\ifthenelse{\equal{#1}{3}}{TRE}{%
+\ifthenelse{\equal{#1}{4}}{FIRE}{%
+\ifthenelse{\equal{#1}{5}}{FEM}{%
+\ifthenelse{\equal{#1}{6}}{SEKS}{%
+\ifthenelse{\equal{#1}{7}}{SJU}{%
+\ifthenelse{\equal{#1}{8}}{ÅTTE}{%
+\ifthenelse{\equal{#1}{9}}{NI}{%
+\ifthenelse{\equal{#1}{10}}{TI}{%
+\ifthenelse{\equal{#1}{11}}{ELLEVE}{%
+\ifthenelse{\equal{#1}{12}}{TOLV}{%
+#1}}}}}}}}}}}}}
+
+%% Redefines the headings
+\titleformat{\chapter}[block]
+{\filcenter\huge}{\filcenter\MakeUppercase{\chaptertitlename} \makeletterof{\thechapter}}{20pt}{\Huge}
+
+\titleformat{\section}
+{\filcenter\Large\bfseries}{\thesection}{1em}{}
+
+\titleformat{\subsection}
+{\filcenter\large\bfseries}{\thesubsection}{1em}{}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%