Accordingly, the white light emitted by each of the latter two filaments is filtered by the colored sleeves, and {HEAD ~ these filaments} thereby produce {TAIL ~ colored light} 
produce
Accordingly , the white light emitted by each of the latter two filaments is filtered by the colored sleeves , and { HEAD ~ these filaments } thereby produce { TAIL ~ colored light }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL