{HEAD ~ A light string}, comprising {TAIL ~ a plurality} of incandescent filament lamps, the incandescent filament lamps being electrically connected in series and powered by an AC power supply 
comprising
{ HEAD ~ A light string } , comprising { TAIL ~ a plurality } of incandescent filament lamps , the incandescent filament lamps being electrically connected in series and powered by an AC power supply
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH