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