{TAIL ~ A silicon material layer} is then formed in the trench using {HEAD ~ an epitaxial deposition} 
{ TAIL ~ A silicon material layer } is then formed in the trench using { HEAD ~ an epitaxial deposition }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD