/usr/share/link-grammar/lt/4.0.affix is in link-grammar-dictionaries-lt 4.7.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | ")" "%" "," "." ":" ";" "?" "!" "''" "'": RPUNC+;
"(" "$" "``": LPUNC+;
|