The step of forming fin structures forms {HEAD ~ fin structures} adjacent to {TAIL ~ the recessed sidewalls} 
adjacent to
The step of forming fin structures forms { HEAD ~ fin structures } adjacent to { TAIL ~ the recessed sidewalls }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL