In other words, {HEAD ~ this sensor} can be located anywhere in {TAIL ~ the system} downstream of a loading station for the pucks 
located anywhere in
In other words , { HEAD ~ this sensor } can be located anywhere in { TAIL ~ the system } downstream of a loading station for the pucks
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH