The lower face of the abutment flange may include a plurality of shoulders to provide stability when {HEAD ~ the utensil} is used as {TAIL ~ a funnel} 
is used as
The lower face of the abutment flange may include a plurality of shoulders to provide stability when { HEAD ~ the utensil } is used as { TAIL ~ a funnel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL