/usr/share/m17n/cy.lnm is in m17n-db 1.7.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | (language name cy nil)
(ar "Arabeg")
(cy "Cymraeg")
(de "Almaeneg")
(en "Saesneg")
(es "Sbaeneg")
(fr "Ffrangeg")
(hi "Hindi")
(it "Eidaleg")
(ja "Siapaneeg")
(pt "Portiwgaleg")
(ru "Rwsieg")
(zh "Tseineeg")
|