The card contains {HEAD ~ a memory} for storing {TAIL ~ PIN data} of a predetermined number of characters 
for storing
The card contains { HEAD ~ a memory } for storing { TAIL ~ PIN data } of a predetermined number of characters
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH