removing said first insulating layer thereby exposing {HEAD ~ the outer walls} of {TAIL ~ said first conductive material} 
of
removing said first insulating layer thereby exposing { HEAD ~ the outer walls } of { TAIL ~ said first conductive material }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL