{HEAD ~ An electronically commutated motor} has {TAIL ~ a permanent magnet rotor} having: at least two rotor poles ; at least one phase ; a power stage ; and a rotor position sensor  
has
{ HEAD ~ An electronically commutated motor } has { TAIL ~ a permanent magnet rotor } having : at least two rotor poles ; at least one phase ; a power stage ; and a rotor position sensor
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH