The slower draining areas of the screen result in {HEAD ~ a lesser quantity} of fibers being collected on {TAIL ~ the screen} in those areas 
collected on
The slower draining areas of the screen result in { HEAD ~ a lesser quantity } of fibers being collected on { TAIL ~ the screen } in those areas
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH