{HEAD ~ The light bulb assembly} comprises a light bulb, a socket for containment of the light bulb, and {TAIL ~ a light switch assembly} for selectively providing current to the socket and attached light bulb 
comprises
{ HEAD ~ The light bulb assembly } comprises a light bulb , a socket for containment of the light bulb , and { TAIL ~ a light switch assembly } for selectively providing current to the socket and attached light bulb
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH