a plurality of change retaining tubes each of which retains {TAIL ~ a corresponding type} of {HEAD ~ the deposited coins} 
a plurality of change retaining tubes each of which retains { TAIL ~ a corresponding type } of { HEAD ~ the deposited coins }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD