{HEAD ~ an overhead support assembly} secured to the upright member and extending from {TAIL ~ a front} thereof 
extending from
{ HEAD ~ an overhead support assembly } secured to the upright member and extending from { TAIL ~ a front } thereof
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH