{TAIL ~ The controller} can also use a random selection algorithm in which the controller selects {HEAD ~ an access code} at random from those stored in a memory list 
{ TAIL ~ The controller } can also use a random selection algorithm in which the controller selects { HEAD ~ an access code } at random from those stored in a memory list
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH