The data blocks are error checked by an error check unit and {TAIL ~ the number} of erroneous data blocks is stored in {HEAD ~ memory} 
The data blocks are error checked by an error check unit and { TAIL ~ the number } of erroneous data blocks is stored in { HEAD ~ memory }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD