{HEAD ~ The DPE} may be comprised of {TAIL ~ hardware or software elements} and have associated with it a mechanism for applying a rule or a set of rules to packets either transmitted or received at the lowest layer at which the packets exist 
comprised of
{ HEAD ~ The DPE } may be comprised of { TAIL ~ hardware or software elements } and have associated with it a mechanism for applying a rule or a set of rules to packets either transmitted or received at the lowest layer at which the packets exist
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH