Therefore a large amount of fasteners consistently supplied to {HEAD ~ the fastening machines} in {TAIL ~ proper orientation} is required 
in
Therefore a large amount of fasteners consistently supplied to { HEAD ~ the fastening machines } in { TAIL ~ proper orientation } is required
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH