{HEAD ~ Each foot bar support assembly} has {TAIL ~ an elongated slide plate} movably supported within the slot, a hook plate fastened to the slide plate, and a foot bar support arm rotatably and slidably fastened to the hook plate 
has
{ HEAD ~ Each foot bar support assembly } has { TAIL ~ an elongated slide plate } movably supported within the slot , a hook plate fastened to the slide plate , and a foot bar support arm rotatably and slidably fastened to the hook plate
HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH