wherein {HEAD ~ a portion} of the second interlayer dielectric film is sandwiched between the second metal patterns and {TAIL ~ the first metal patterns} 
is sandwiched between
wherein { HEAD ~ a portion } of the second interlayer dielectric film is sandwiched between the second metal patterns and { TAIL ~ the first metal patterns }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL