The provision of independent input, transport, and output drives enables accumulating {HEAD ~ apparatus} 10 to be matched with {TAIL ~ any upstream and downstream devices} 
The provision of independent input , transport , and output drives enables accumulating { HEAD ~ apparatus } 10 to be matched with { TAIL ~ any upstream and downstream devices }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL