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\TestChapter {\@arabic {1}}{\@arabic {26}}\ignorespaces First heading\protect \unhskip \par
\TestSection {\@arabic {1}}{\@arabic {26}}\ignorespaces First subheading\protect \unhskip \par
\TestSection {\@arabic {2}}{\@arabic {26}}\ignorespaces Second subheading\protect \unhskip \par
\TestChapter {\@arabic {2}}{\@arabic {26}}\ignorespaces Second heading\protect \unhskip \par
\TestSection {\@arabic {3}}{\@arabic {26}}\ignorespaces Third subheading\protect \unhskip \par
\TestSection {\@arabic {4}}{\@arabic {26}}\ignorespaces Fourth subheading\protect \unhskip \par
\relax