means for comparing the first message with the set of rules that are stored in {HEAD ~ association} with {TAIL ~ the first cache} for a match with one or more, and 
means for comparing the first message with the set of rules that are stored in { HEAD ~ association } with { TAIL ~ the first cache } for a match with one or more , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH