{HEAD ~ The rotor} has {TAIL ~ an array} of spaced teeth which are selectively magnetized to become the poles 
{ HEAD ~ The rotor } has { TAIL ~ an array } of spaced teeth which are selectively magnetized to become the poles
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH