After {HEAD ~ deposition} of {TAIL ~ a silicon nitride layer} and an insulation glass layer on a substrate coating semiconductor devices, the contact windows are etched 
of
After { HEAD ~ deposition } of { TAIL ~ a silicon nitride layer } and an insulation glass layer on a substrate coating semiconductor devices , the contact windows are etched
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH