The system returns the larger denomination coin or {TAIL ~ coins} instead of the deposited smaller denomination coins only when {HEAD ~ the smaller denomination coin} is in its change running out state 
The system returns the larger denomination coin or { TAIL ~ coins } instead of the deposited smaller denomination coins only when { HEAD ~ the smaller denomination coin } is in its change running out state
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH