xev | grep keycode
!!! Caps_Lock => Control_L remove Lock = Caps_Lock keysym Caps_Lock = Control_L add Control = Control_L
!!! Prior/Next !keysym End = Prior !keysym Insert = Next
!!! Control_L => Caps_Lock !remove Control = Control_L !keysym Control_L = Caps_Lock !add Lock = Caps_Lock