{TAIL ~ Each sidewall} has upper and lower portions horizontally offset from one another with a connecting bridging member forming {HEAD ~ an arm rest} 
{ TAIL ~ Each sidewall } has upper and lower portions horizontally offset from one another with a connecting bridging member forming { HEAD ~ an arm rest }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD