Man pages matching name b::hooks::op::check::entersubforcv in section 3pm:

B::Hooks::OP::Check::EntersubForCV.3pm.en	debian 10 / libb-hooks-op-check-entersubforcv-perl
B::Hooks::OP::Check::EntersubForCV.3pm.en	debian 11 / libb-hooks-op-check-entersubforcv-perl
B::Hooks::OP::Check::EntersubForCV.3pm.en	debian 12 / libb-hooks-op-check-entersubforcv-perl