According to one embodiment of the invention, {TAIL ~ the comparator} 515 includes the application of heuristics 530 to {HEAD ~ the comparison} 
According to one embodiment of the invention , { TAIL ~ the comparator } 515 includes the application of heuristics 530 to { HEAD ~ the comparison }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD