{HEAD ~ Wiper wear} is substantially reduced in most instances by {TAIL ~ the wipers} contact with the relatively smooth islands, rather than with the relatively abrasive base layer 
{ HEAD ~ Wiper wear } is substantially reduced in most instances by { TAIL ~ the wipers } contact with the relatively smooth islands , rather than with the relatively abrasive base layer
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH