Man pages matching name core in section 5:

core.5.en	debian 10 / manpages
core.5.ja	debian 10 / manpages-ja
core.5.pl	debian 10 / manpages-pl
core.5.en	debian 11 / manpages
core.5.ja	debian 11 / manpages-ja
core.5.pl	debian 11 / manpages-pl
core.5.en	debian 12 / manpages
core.5.ja	debian 12 / manpages-ja
core.5.ru	debian 12 / manpages-ru