Yet another way to imagine it: Normal coil-and-magnet motors often are built like this: three electromagnet coils in the rotor, two permanent magnets as the stator, a commutator, and they operate by magnetic attraction/repulsion.
(Normal coil-and-magnet motors; are built; T:often) (they; operate; )
Normal coil-and-magnet motors they
are built operate
T:often