wherein forwarding the network traffic comprises forwarding the first portion and {HEAD ~ the second portion} of {TAIL ~ the network traffic} based on the application of the first and the second sets of patterns, respectively 
wherein forwarding the network traffic comprises forwarding the first portion and { HEAD ~ the second portion } of { TAIL ~ the network traffic } based on the application of the first and the second sets of patterns , respectively
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH