{HEAD ~ Most preferred bright metal} for {TAIL ~ deposition} is aluminum, though copper, silver and gold may be used 
for
{ HEAD ~ Most preferred bright metal } for { TAIL ~ deposition } is aluminum , though copper , silver and gold may be used
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH