{TAIL ~ A bill} is supplied to {HEAD ~ the detecting section} which detects, for example, a magnetism pattern of the bill 
{ TAIL ~ A bill } is supplied to { HEAD ~ the detecting section } which detects , for example , a magnetism pattern of the bill
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH