{HEAD ~ a body} for being mounted to said {TAIL ~ container} around said container opening and defining an access aperture for access to said container opening 
for mounted to
{ HEAD ~ a body } for being mounted to said { TAIL ~ container } around said container opening and defining an access aperture for access to said container opening
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH