/usr/lib/libreoffice/share/template/cy/wizard/styles/ is in libreoffice-l10n-cy 1:3.5.7-0ubuntu13.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libreoffice/share/template/cy/wizard/styles/black_white.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/blackberry.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/default.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/diner.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/fall.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/glacier.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/green_grapes.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/jeans.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/marine.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/millennium.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/nature.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/neon.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/night.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/nostalgic.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/pastell.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/pool.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/pumpkin.ots
/usr/lib/libreoffice/share/template/cy/wizard/styles/xos.ots