{HEAD ~ A passivation capping layer} overlies {TAIL ~ the ohmic contact} and has an oxidation rate which is less than the oxidation rate of the ohmic contact 
{ HEAD ~ A passivation capping layer } overlies { TAIL ~ the ohmic contact } and has an oxidation rate which is less than the oxidation rate of the ohmic contact
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH