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