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