The two CPP cells in each bit cell have {HEAD ~ different resistance states} and the MTJ cell and CPP cell in {TAIL ~ each sub cell} have different resistance states 
The two CPP cells in each bit cell have { HEAD ~ different resistance states } and the MTJ cell and CPP cell in { TAIL ~ each sub cell } have different resistance states
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH