{HEAD ~ The first case} has {TAIL ~ side walls} and a rear wall at least partially defining a first product display area 
{ HEAD ~ The first case } has { TAIL ~ side walls } and a rear wall at least partially defining a first product display area
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH