Moreover, since the substitution of {HEAD ~ the larger denomination coin} for {TAIL ~ the smaller denomination coins} is carried out only when the smaller denomination coin is in its change running out state, use of the vending machine as a coin exchange machine can be adequately prevented 
Moreover , since the substitution of { HEAD ~ the larger denomination coin } for { TAIL ~ the smaller denomination coins } is carried out only when the smaller denomination coin is in its change running out state , use of the vending machine as a coin exchange machine can be adequately prevented
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH