A gaming machine 50 has a display 51 on which {HEAD ~ an array} of {TAIL ~ symbols} is displayed 
of
A gaming machine 50 has a display 51 on which { HEAD ~ an array } of { TAIL ~ symbols } is displayed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH