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