The other end wall has upper and lower portions horizontally offset from one another with {HEAD ~ a connecting bridging member} forming {TAIL ~ a back rest} 
The other end wall has upper and lower portions horizontally offset from one another with { HEAD ~ a connecting bridging member } forming { TAIL ~ a back rest }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL