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