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