Based on {TAIL ~ the application} of {HEAD ~ the set} of patterns, the network device forwards the network traffic 
Based on { TAIL ~ the application } of { HEAD ~ the set } of patterns , the network device forwards the network traffic
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH