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