{HEAD ~ A complete data stored ROM} is manufactured by partial activation of {TAIL ~ predetermined regions} responding to the specifications of users 
{ HEAD ~ A complete data stored ROM } is manufactured by partial activation of { TAIL ~ predetermined regions } responding to the specifications of users
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH