{HEAD ~ The silicon} underneath {TAIL ~ the polysilicon gates} 320 a and 320 b is not removed 
underneath
{ HEAD ~ The silicon } underneath { TAIL ~ the polysilicon gates } 320 a and 320 b is not removed
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH