/usr/share/myspell/dicts/el_GR.dic is in myspell-el-gr 0.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/myspell/dicts/../../hunspell/el_GR.dic
/usr/share/myspell/dicts/../../hunspell/el_GR.dic