Improve Control panel Users/Groups/Permissions labels

In Control panel -> Groups: the title is "Thing you can do here". Expected: "Things you can do here"
In Control panel -> Users: the title is "Things you can do". Expected: "Things you can do here"
In Control panel -> Permissions: the title is "Where is who allowed to do what?". This sounds a bit strange to me. It might be better to make this: "Who is allowed what where?" or just "Permissions".