A second polysilicon layer 13, or {TAIL ~ polylayer}, is, thereupon, deposited into {HEAD ~ the trench} 5 
A second polysilicon layer 13 , or { TAIL ~ polylayer } , is , thereupon , deposited into { HEAD ~ the trench } 5
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH