{TAIL ~ The shoulder region} merges into and provides a transition between the finish and {HEAD ~ a sidewall portion} 
{ TAIL ~ The shoulder region } merges into and provides a transition between the finish and { HEAD ~ a sidewall portion }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD