{HEAD ~ a ring} with {TAIL ~ a flattened shape} fastened to the upper end of the enclosure, and 
with
{ HEAD ~ a ring } with { TAIL ~ a flattened shape } fastened to the upper end of the enclosure , and
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH