In one embodiment of the invention, the processor 502 provides {HEAD ~ the search key} 408 to {TAIL ~ system} 400 
to
In one embodiment of the invention , the processor 502 provides { HEAD ~ the search key } 408 to { TAIL ~ system } 400
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH