{HEAD ~ A system} for detecting {TAIL ~ movement} of a forcer of a motor directed for effecting movement of a forcer in a first direction in response to command pulses 
for detecting
{ HEAD ~ A system } for detecting { TAIL ~ movement } of a forcer of a motor directed for effecting movement of a forcer in a first direction in response to command pulses
HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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