The disclosure relates to counters that require {TAIL ~ the counting} to be done under {HEAD ~ conditions} of high security 
The disclosure relates to counters that require { TAIL ~ the counting } to be done under { HEAD ~ conditions } of high security
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH