The second voltage forms a second write current for a second duration through {HEAD ~ the resistive sense memory cell} in {TAIL ~ a second direction} 
The second voltage forms a second write current for a second duration through { HEAD ~ the resistive sense memory cell } in { TAIL ~ a second direction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL