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