Also, {TAIL ~ the client B} 300 and the client C 400 also leave {HEAD ~ a trace} 
Also , { TAIL ~ the client B } 300 and the client C 400 also leave { HEAD ~ a trace }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD