{HEAD ~ The intermediate member} contains {TAIL ~ a plurality} of segmented circular concentrically spaced slots corresponding with the grooves of the base and cover member planar faces 
contains
{ HEAD ~ The intermediate member } contains { TAIL ~ a plurality } of segmented circular concentrically spaced slots corresponding with the grooves of the base and cover member planar faces
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH