Man pages matching name bp_pairwise_kaks in section 1p:

bp_pairwise_kaks.1p.en	debian 10 / libbio-tools-phylo-paml-perl
bp_pairwise_kaks.1p.en	debian 11 / libbio-tools-phylo-paml-perl
bp_pairwise_kaks.1p.en	debian 12 / libbio-tools-phylo-paml-perl