{TAIL ~ The data processor} 7, wherein the known data comprises the code corresponding to {HEAD ~ a filler bit} 
{ TAIL ~ The data processor } 7 , wherein the known data comprises the code corresponding to { HEAD ~ a filler bit }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD