{HEAD ~ A mouthpiece} is attached by a reduced diameter neck to {TAIL ~ the first end} of the cup portion 
is attached to
{ HEAD ~ A mouthpiece } is attached by a reduced diameter neck to { TAIL ~ the first end } of the cup portion
HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH