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