In a space between the wall and bag, {HEAD ~ a plurality} of {TAIL ~ pressure sensors} are positioned 
of
In a space between the wall and bag , { HEAD ~ a plurality } of { TAIL ~ pressure sensors } are positioned
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH