{TAIL ~ These one more internal features} can be formed singly or concurrently by use of {HEAD ~ the single molding tool} 
{ TAIL ~ These one more internal features } can be formed singly or concurrently by use of { HEAD ~ the single molding tool }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD