This results in {HEAD ~ a sensor} that is unaffected by {TAIL ~ damage} at outer edges of the sensor layers 
is unaffected by
This results in { HEAD ~ a sensor } that is unaffected by { TAIL ~ damage } at outer edges of the sensor layers
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH