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\loop
\bgroup
\uccode`\~\count@
\uppercase{
\egroup
\xdef~{\noexpand\utfeightb\string^^c2\string~}
}
\ifnum\count@<191\relax
\advance\count@\@ne
\repeat
\count@192\relax
\loop
\bgroup
\uccode`\~\count@
\advance\count@-64
\uccode`\!\count@
\uppercase{
\egroup
\xdef~{\noexpand\utfeightb\string^^c3\string!}
}
\ifnum\count@<255\relax
\advance\count@\@ne
\repeat
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