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