A trench may be formed in the metal layer to create sections in the metal layer, and {HEAD ~ a portion} of the trench may include {TAIL ~ an insulator} 
A trench may be formed in the metal layer to create sections in the metal layer , and { HEAD ~ a portion } of the trench may include { TAIL ~ an insulator }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL