/usr/share/myspell/dicts/lt.dic is in myspell-lt 1.2.1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/myspell/dicts/../../hunspell/lt_LT.dic
/usr/share/myspell/dicts/../../hunspell/lt_LT.dic