A counter counts {HEAD ~ the number} of times a data image pattern is detected and generates {TAIL ~ a repeat count} 
A counter counts { HEAD ~ the number } of times a data image pattern is detected and generates { TAIL ~ a repeat count }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL