{HEAD ~ The dielectric material} has {TAIL ~ a polygonal shape} including a front face and a bottom face 
has
{ HEAD ~ The dielectric material } has { TAIL ~ a polygonal shape } including a front face and a bottom face
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH