In {HEAD ~ one position}, the motor circuit uses {TAIL ~ only the poles} 47a, 47c 
In { HEAD ~ one position } , the motor circuit uses { TAIL ~ only the poles } 47a , 47c
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH