In {HEAD ~ the preferred embodiment}, {TAIL ~ the rotor} carries three blades in each row, as does the stator 
In { HEAD ~ the preferred embodiment } , { TAIL ~ the rotor } carries three blades in each row , as does the stator
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH