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