{TAIL ~ The process} of checking for {HEAD ~ secondary correlations}, as mentioned above, may include calculating a threshold, in each iteration, in respect to the frequency values of all trackers 
{ TAIL ~ The process } of checking for { HEAD ~ secondary correlations } , as mentioned above , may include calculating a threshold , in each iteration , in respect to the frequency values of all trackers
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH