a cup shaped {HEAD ~ housing} having {TAIL ~ an open mouth} and having an inlet and an outlet formed therein 
having
a cup shaped { HEAD ~ housing } having { TAIL ~ an open mouth } and having an inlet and an outlet formed therein
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH