{HEAD ~ A rod support member} is coupled to the base of the rod in a manner to permit {TAIL ~ the rod} to pivot about its base 
{ HEAD ~ A rod support member } is coupled to the base of the rod in a manner to permit { TAIL ~ the rod } to pivot about its base
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH