a tapered wall extending from the bottom end to the top end, said {HEAD ~ tapered wall} having {TAIL ~ an outer surface} and an inner surface 
a tapered wall extending from the bottom end to the top end , said { HEAD ~ tapered wall } having { TAIL ~ an outer surface } and an inner surface
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH