Man pages matching name subst in section 1:

subst.1.en	debian 10 / inn
subst.1.zh_CN	debian 10 / manpages-zh
subst.1.zh_TW	debian 10 / manpages-zh
subst.1.en	debian 11 / inn
subst.1.zh_CN	debian 11 / manpages-zh
subst.1.zh_TW	debian 11 / manpages-zh
subst.1.en	debian 12 / inn
subst.1.zh_CN	debian 12 / manpages-zh
subst.1.zh_TW	debian 12 / manpages-zh